APA (7th ed.) Citation

Shettles, L. B., & Rorvik,David M. (2006). How to choose the sex of your baby: The method supported by scientific evidence. Broadway Books.

Chicago Style (17th ed.) Citation

Shettles, Landrum B., and Rorvik,David M. How to Choose the Sex of Your Baby: The Method Supported by Scientific Evidence. New York: Broadway Books, 2006.

MLA (9th ed.) Citation

Shettles, Landrum B., and Rorvik,David M. How to Choose the Sex of Your Baby: The Method Supported by Scientific Evidence. Broadway Books, 2006.