1. Barthlen GM. Sleep disorder. Obstructive sleep apnea syndrome, restless legs syndrome and insomnia in geriatric patients. Geriatrics. 2002. 57:34–39.
2. Floyd JA. The use of across-method triangulation in the study of sleep concerns in healthy older adults. Advances in Nursing Science. 1993. 16:70–80.
3. Foreman MD, Wykle M. Nursing standard of practice protocol: Sleep disturbances in elderly patients. The NICHE Faculty. Geriatric Nursing. 1995. 16:238–243.
4. Gall K, Peterson T, Riesch S. Night life: Nocturnal behavior among hospitalized elderly. Journal of Gerontological Nursing. 1990. 16:31–35.
5. Jensen DP, Herr KA. Sleeplessness. Nursing Clinics of North America. 1993. 28:385–405.
6. Johnson JE, Waldo M, Johnson RG. Research consideration: Stress and perceived health status in the rural elderly. Journal of Gerontological Nursing. 1993. 19:24–29.
7. Kang MJ. Relationship between sleep patterns and factors of sleep disturbance of the hospitalized elderly patients. 2005. Chuncheon: Hallym University;Unpublished master's thesis.
8. Kevin M, Diane W, Patrick HJ. Factors influencing persistent subjective insomnia in old age: A follow-up study of good and poor sleepers aged 65-74. Age and Aging. 1989. 18:117–122.
9. Kim ES. Wishes of the elderly. 2002. Seoul: Kyung Hee University;Unpublished master's thesis.
10. Kim GD. A study on quality of sleep and sleep disturbing factors among community dwelling elderly. Journal of Korean Society of Welfare for the Aged. 2000. 7:173–192.
11. Kim JJ. . The effects of relaxation techniques on anxiety, sleep patterns disturbance and hypertension. 1991. Daegu: Kyungpook National University;Unpublished doctoral dissertation.
12. Kim JJ. Physiology. 1995. 3rd ed. Seoul: Jigu Mun Wha Sa.
13. Kim KS, Yoo KH. A study on sleep in rheumatoid arthritis patients. Journal of Korean Academy of Fundamentals of Nursing. 1999. 6:198–210.
14. Kim SJ. A Study on the factors of sleep disturbance in hospitalized chronic liver disease patients. 2002. Iksan: Wonkwang University;Unpublished master's thesis.
15. Kim SM, Oh JJ, Song MS. Sleep pattern and related factor among community dwelling elderly. The Seoul Journal of Nursing. 1997. 11:24–38.
16. Kim SM, Oh JJ, Song MS, Park YH. Comparison of sleep and related variables between young and old adults. Journal of Korean Academy of Nursing. 1997. 27:820–830.
17. Kim SO. Sleep disturbance and aging. Researches in Ulsan Science College. 1999. 26:349–364.
18. Ko MS. A study of sleep pattern, factors of sleep disturbance and sleep enhancement behaviors in hospitalized elderly patients. 2002. Seoul: Chung-Ang University;Unpublished master's thesis.
19. Kozier B, Erb G, Berman A, Synder S. Fundamentals of nursing: Concepts, process, and practice. 2004. New Jersey: Prentice-Hall.
20. McNeil BJ, Padrick KP, Wellman J. 'I didn't sleep a wink'. American Journal of Nursing. 1986. 86:26–27.
21. Morgan K. Tallis RC, Fillit HM, editors. Sleep, aging and later life insomnia. Brocklehurst's textbook of geriatric medicine and gerontology. 2003. London: Churchill Livingstone;110–124.
22. National Statistical Office. Statistics of population in the future. 2007. Seoul: National Statistical Office.
23. Oh JJ, Song MS, Kim SM. Development and validation of Korean sleep scale A. Journal of Korean Academy of Nursing. 1998. 28:563–572.
24. Pacini CM, Fitzpatric JJ. Sleep pattern of hospitalized and nohospitalized aged individual. Journal of Gerontological Nursing. 1982. 8:327–332.
25. Park YR. Types of sleeping pattern and factors relating to sleep disturbance among hospitalized old patients in the medical ward. 2004. Seoul: Korea University;Unpublished master' thesis.
26. Sok S, Kim KB. Effects of auricular acupuncture on insomnia in Korean elderly. Journal of Korean Academy of Nursing. 2005. 35:1014–1024.
27. Song MS, Kim SM, Oh JJ. Sleep study of elderly and nursing. Journal of Korean Academy of Psychiatric and Mental Health Nursing. 1995. 4:45–64.
28. Southwell MT, Wistow G. Sleep in hospitals at night: Are patients' needs being met? Journal of Advanced Nursing. 1995. 21:1101–1109.
29. The Korean Geriatrics Society. Geriatrics. 2005. Seoul: Medicine Publishing.