APA-viite

Waddington, C. H. (1966). Principles of development and differentiation.

Chicago-tyylinen lähdeviittaus

Waddington, C H. Principles of Development and Differentiation. Macmillan Company, New York, 1966.

MLA-viite

Waddington, C H. Principles of Development and Differentiation. 1966.