Cahill, K., & Perera, R. (2011). Competitions and incentives for smoking cessation.
Cita Chicago Style (17a ed.)Cahill, K., y R. Perera. Competitions and Incentives for Smoking Cessation. 2011.
Cita MLA (9a ed.)Cahill, K., y R. Perera. Competitions and Incentives for Smoking Cessation. 2011.
Precaución: Estas citas no son 100% exactas.