Gaya APA

Glad, J., Itzkoff, S, W. (2006). Future human evolution : eugenics in the twenty-first century . Schuykill Haven: Hermitage Publishers.

Gaya MLA

Glad, John., Itzkoff, Seymour, W.. "Future human evolution : eugenics in the twenty-first century". Schuykill Haven: Hermitage Publishers, 2006. Text.