Dyfyniad APA

Cahill, K., & Perera, R. (2011). Competitions and incentives for smoking cessation.

Dyfyniad Arddull Chicago

Cahill, K., and R. Perera. Competitions and Incentives for Smoking Cessation. 2011.

Dyfyniad MLA

Cahill, K., and R. Perera. Competitions and Incentives for Smoking Cessation. 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.