Cita APA (7a ed.)

West, R., Zatonski, W., Cedzynska, M., Lewandowska, D., Pazik, J., Aveyard, P., & Stapleton, J. (2011). Placebo-controlled trial of cytisine for smoking cessation.

Cita Chicago Style (17a ed.)

West, R., W. Zatonski, M. Cedzynska, D. Lewandowska, J. Pazik, P. Aveyard, y J. Stapleton. Placebo-controlled Trial of Cytisine for Smoking Cessation. 2011.

Cita MLA (9a ed.)

West, R., et al. Placebo-controlled Trial of Cytisine for Smoking Cessation. 2011.