Bell, G. H., Davidson, J. N., & Emslie-Smith, D. (1972). Textbook of physiology and biochemistry (8th ed.). Williams and Wilkins Co..

Bell, George Howard, J. N. Davidson, a Donald Emslie-Smith. Textbook of Physiology and Biochemistry. 8th ed. Baltimore: Williams and Wilkins Co., 1972.

Bell, George Howard, et al. Textbook of Physiology and Biochemistry. 8th ed. Williams and Wilkins Co., 1972.