APA citáció

Vogelmeier Claus, Hederer Bettina, Glaab Thomas, Schmidt Hendrik, Rutten-van Molken Maureen P M H, Beeh Kai M, . . . et al. (2011). Tiotropium versus Salmeterol for the Prevention of Exacerbations of COPD.

Chicago Style (17th ed.) Citation

Vogelmeier Claus, et al. Tiotropium Versus Salmeterol for the Prevention of Exacerbations of COPD. 2011.

MLA idézés

Vogelmeier Claus, et al. Tiotropium Versus Salmeterol for the Prevention of Exacerbations of COPD. 2011.