APA (7th ed.) Zitazioa
Howe, R. L. (1974). How to stay younger while growing older: Aging for all ages. Word Books.
Chicago Style (17th ed.) Zitazioa
Howe, Reuel L. How to Stay Younger While Growing Older: Aging for All Ages. Waco, Tex.: Word Books, 1974.
MLA (9th ed.) Zitazioa
Howe, Reuel L. How to Stay Younger While Growing Older: Aging for All Ages. Word Books, 1974.
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