MLA

Evans, Charles Arthur Lovatt, Hamilton Hartridge, and Ernest Henry Starling. Principles of Human Physiology. 9th ed. London: Churchill, 1945.

APA

Evans, C. Arthur Lovatt, Hartridge, H., & Starling, E. Henry. (1945). Principles of human physiology. 9th ed. London: Churchill.

Chicago

Evans, Charles Arthur Lovatt, Hamilton Hartridge, and Ernest Henry Starling. Principles of Human Physiology. 9th ed. London: Churchill, 1945.