Dyfyniad APA
Atchley, R. C. (1980). The Social Forces in Later Life: An Introduction of Social Gerontology (3rd ed.). Wadsworth.
Dyfyniad Arddull Chicago
Atchley, Robert C. The Social Forces in Later Life: An Introduction of Social Gerontology. 3rd ed. Belmont: Wadsworth, 1980.
Dyfyniad MLA
Atchley, Robert C. The Social Forces in Later Life: An Introduction of Social Gerontology. 3rd ed. Wadsworth, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.