Dyfyniad APA

(1968). Genetics and environmental influences on behaviour. Plenum Press.

Dyfyniad Arddull Chicago

Genetics and Environmental Influences on Behaviour. New York: Plenum Press, 1968.

Dyfyniad MLA

Genetics and Environmental Influences on Behaviour. Plenum Press, 1968.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.