APA استشهاد

Birkett, C. (1979). Heredity, development and evolution. Macmillan.

استشهاد بنمط شيكاغو

Birkett, Christine. Heredity, Development and Evolution. London: Macmillan, 1979.

MLA استشهاد

Birkett, Christine. Heredity, Development and Evolution. Macmillan, 1979.