APA (7e ed.) Bronvermelding

Haggard, H. W. (1937). Staying young beyond your years. Funk and Wagnalls company.

Chicago (17e ed.) Bronvermelding

Haggard, Howard Wilcox. Staying Young Beyond Your Years. New York: Funk and Wagnalls company, 1937.

MLA (9e ed.) Bronvermelding

Haggard, Howard Wilcox. Staying Young Beyond Your Years. Funk and Wagnalls company, 1937.

Let op: Deze citaties zijn niet altijd 100% accuraat.