Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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