APA citiranje

Ruf, K. C., Fehn, S., Bachmann, M., Moeller, A., Roth, K., Kriemler, S., & Hebestreit, H. (2012). Validation of activity questionnaires in patients with cystic fibrosis by accelerometry and cycle ergometry. BioMed Central.

Citação norma Chicago

Ruf, Katharina C., Sonja Fehn, Michèle Bachmann, Alexander Moeller, Kristina Roth, Susi Kriemler, and Helge Hebestreit. Validation of Activity Questionnaires in Patients With Cystic Fibrosis By Accelerometry and Cycle Ergometry. BioMed Central, 2012.

MLA citiranje

Ruf, Katharina C., et al. Validation of Activity Questionnaires in Patients With Cystic Fibrosis By Accelerometry and Cycle Ergometry. BioMed Central, 2012.