Cita APA (7th ed.)

Samways, L. (1997). The 12 secrets of health and happiness. Penguin.

Cita Chicago (17th ed.)

Samways, Louise. The 12 Secrets of Health and Happiness. Ringwood, Vic.: Penguin, 1997.

Cita MLA (8th ed.)

Samways, Louise. The 12 Secrets of Health and Happiness. Penguin, 1997.