APA (7th ed.) Citation

Orr, H. B. (1893). A theory of development and heredity. Macmillan.

Chicago Style (17th ed.) Citation

Orr, H. B. A Theory of Development and Heredity. New York: Macmillan, 1893.

MLA (9th ed.) Citation

Orr, H. B. A Theory of Development and Heredity. Macmillan, 1893.

Warning: These citations may not always be 100% accurate.