APA (7th ed.) Citation

Penrose, L. S. (1965). Outline of human genetics (2d. ed.). Heinemann.

Chicago Style (17th ed.) Citation

Penrose, Lionel Sharples. Outline of Human Genetics. 2d. ed. London: Heinemann, 1965.

MLA (9th ed.) Citation

Penrose, Lionel Sharples. Outline of Human Genetics. 2d. ed. Heinemann, 1965.