APA (7th ed.) Citation

Hunter, G. W., Mork, G. M. A., & Hunter, F. R. (1950). Manual and key for Biology in our lives and Workbook. American Book Co..

Chicago Style (17th ed.) Citation

Hunter, George W., Gordon M. A. Mork, and Francis Robert Hunter. Manual and Key for Biology in Our Lives and Workbook. New York: American Book Co., 1950.

MLA (8th ed.) Citation

Hunter, George W., et al. Manual and Key for Biology in Our Lives and Workbook. American Book Co., 1950.