APA (7th ed.) Citation

Hirsch, N. D. M. (1930). Twins: Heredity and environment. Harvard university press.

Chicago Style (17th ed.) Citation

Hirsch, Nathaniel David Mttron. Twins: Heredity and Environment. Cambridge: Harvard university press, 1930.

MLA (9th ed.) Citation

Hirsch, Nathaniel David Mttron. Twins: Heredity and Environment. Harvard university press, 1930.