APA引文

Russell, M. A., Sutton, S. R., Feyerabend, C., Cole, P. V., & Saloojee, Y. (1977). Nicotine chewing gum as a substitute for smoking.

Citação norma Chicago

Russell, M A., S R. Sutton, C. Feyerabend, P V. Cole, and Y. Saloojee. Nicotine Chewing Gum As a Substitute for Smoking. 1977.

MLA引文

Russell, M A., et al. Nicotine Chewing Gum As a Substitute for Smoking. 1977.