APA-viite

Sheppard, P. M. (1967). Natural selection and heredity (Ed.3.).

Chicago-tyylinen lähdeviittaus

Sheppard, P M. Natural Selection and Heredity. Ed.3. London, Hutchinson University Library, 1967.

MLA-viite

Sheppard, P M. Natural Selection and Heredity. Ed.3. 1967.