APA (7e ed.) Bronvermelding

Fearnsides, W., & Bulman, O. (1966). The psychology of human ageing. Penguin Books.

Chicago (17e ed.) Bronvermelding

Fearnsides, W.G, en O.M.B Bulman. The Psychology of Human Ageing. Harmondsworth, Middlesex, England: Penguin Books, 1966.

MLA (8e ed.) Bronvermelding

Fearnsides, W.G, en O.M.B Bulman. The Psychology of Human Ageing. Penguin Books, 1966.