APA (7th ed.) Citation

Smith, G., Evans, L. J., & Stieglitz, E. J. (1944). Preventive medicine. Science, 100, 313.

Chicago Style (17th ed.) Citation

Smith, G., L. J. Evans, and E. J. Stieglitz. "Preventive Medicine." Science 100 (1944): 313.

MLA (9th ed.) Citation

Smith, G., et al. "Preventive Medicine." Science, vol. 100, 1944, p. 313.