APA
"World Health Organization H. D. (. f., "World Health Organization H. D. (. f., . (1998). World atlas of aging. Geneva: World Health Organisation.
Chicago
"World Health Organization Health Development (Centre for-)", "World Health Organization Health Development (Centre for-)", . 1998. World atlas of aging. Geneva: World Health Organisation.
Harvard
"World Health Organization H. D. (. f., "World Health Organization H. D. (. f., . (1998). World atlas of aging. Geneva: World Health Organisation.
MLA
"World Health Organization Health Development (Centre for-)", "World Health Organization Health Development (Centre for-)", . World atlas of aging. Geneva: World Health Organisation. 1998.