Gaya APA

Wynbrandt, J., Ludman, M, D. (2008). The Encyclopedia of Genetic Disorders and Birth Defects (Third Edition). New York: Facts On File.

Gaya MLA

Wynbrandt, James., Ludman, Mark, D.. "The Encyclopedia of Genetic Disorders and Birth Defects". Third Edition New York: Facts On File, 2008. Computer File.