APA (7th ed.) Citation

MacDougall, M. S., & Hegner, R. W. (1943). Biology, the science of life. McGraw-Hill book company.

Chicago Style (17th ed.) Citation

MacDougall, Mary Stuart, and Robert William Hegner. Biology, the Science of Life. New York and London: McGraw-Hill book company, 1943.

MLA (9th ed.) Citation

MacDougall, Mary Stuart, and Robert William Hegner. Biology, the Science of Life. McGraw-Hill book company, 1943.