Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (8a ed.)

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