Cita APA (7th ed.)

Scher, J. (1985). Pregnancy everything you need to know. penguin Books.

Cita Chicago (17th ed.)

Scher, Jonathan. Pregnancy Everything You Need to Know. Great Britain: penguin Books, 1985.

Cita MLA (8th ed.)

Scher, Jonathan. Pregnancy Everything You Need to Know. penguin Books, 1985.