APA (7th ed.) Citation

D.B. Bromley. (1971). The Psychology of human ageing. Penguin.

Chicago Style (17th ed.) Citation

D.B. Bromley. The Psychology of Human Ageing. Harmondsworth: Penguin, 1971.

MLA (9th ed.) Citation

D.B. Bromley. The Psychology of Human Ageing. Penguin, 1971.