Citação norma APA

Hiemstra, M., Ringlever, L., Otten, R., Jackson, C., van Schayck, O. C., & Engels, R. C. (2009). Efficacy of smoking prevention program 'Smoke-free Kids': Study protocol of a randomized controlled trial. BioMed Central.

Citação norma Chicago

Hiemstra, Marieke, Linda Ringlever, Roy Otten, Christine Jackson, Onno CP van Schayck, and Rutger CME Engels. Efficacy of Smoking Prevention Program 'Smoke-free Kids': Study Protocol of a Randomized Controlled Trial. BioMed Central, 2009.

Citação norma MLA

Hiemstra, Marieke, et al. Efficacy of Smoking Prevention Program 'Smoke-free Kids': Study Protocol of a Randomized Controlled Trial. BioMed Central, 2009.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.