Dyfyniad APA

Brewer, N. T., Hall, M. G., Lee, J. G. L., Peebles, K., Noar, S. M., & Ribisl, K. M. (2015). Testing warning messages on smokers’ cigarette packages: A standardized protocol. Tob Control.

Dyfyniad Arddull Chicago

Brewer, Noel T., Marissa G. Hall, Joseph G. L. Lee, Kathryn Peebles, Seth M. Noar, and Kurt M. Ribisl. "Testing Warning Messages On Smokers’ Cigarette Packages: A Standardized Protocol." Tob Control 2015.

Dyfyniad MLA

Brewer, Noel T., et al. "Testing Warning Messages On Smokers’ Cigarette Packages: A Standardized Protocol." Tob Control 2015.

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