APA aipamena

Sheppard, P. M. (1960). Natural Selection and Heredity. New York: Harper and Row.

Chicago Style aipamena

Sheppard, P. M. Natural Selection and Heredity. New York: Harper and Row, 1960.

MLA aipamena

Sheppard, P. M. Natural Selection and Heredity. New York: Harper and Row, 1960.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.