APA (7th ed.) Citation

Walter, H. E. (1938). Genetics: An introduction to the study of heredity (4th ed.). The Macmillan company.

Chicago Style (17th ed.) Citation

Walter, Herbert Eugene. Genetics: An Introduction to the Study of Heredity. 4th ed. New York: The Macmillan company, 1938.

MLA (9th ed.) Citation

Walter, Herbert Eugene. Genetics: An Introduction to the Study of Heredity. 4th ed. The Macmillan company, 1938.