APA (7th ed.) Citation

Schwartz, L. (1980). The world of the unborn: Nurturing your child before birth. R. Marek.

Chicago Style (17th ed.) Citation

Schwartz, Leni. The World of the Unborn: Nurturing Your Child Before Birth. New York: R. Marek, 1980.

MLA (9th ed.) Citation

Schwartz, Leni. The World of the Unborn: Nurturing Your Child Before Birth. R. Marek, 1980.