Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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