CL, C., AL, M., M, S., AE, B., ML, B., BE, A., . . . P, O. (2003). International Physical Activity Questionnaire: 12-country reliability and validity. Medicine & Science in Sports & Exercise, 35(8), 1381. https://doi.org/10.1249/01.mss.0000078924.61453.fb
Chicago Style (17th ed.) CitationCL, Craig, et al. "International Physical Activity Questionnaire: 12-country Reliability and Validity." Medicine & Science in Sports & Exercise 35, no. 8 (2003): 1381. https://doi.org/10.1249/01.mss.0000078924.61453.fb.
MLA (9th ed.) CitationCL, Craig, et al. "International Physical Activity Questionnaire: 12-country Reliability and Validity." Medicine & Science in Sports & Exercise, vol. 35, no. 8, 2003, p. 1381, https://doi.org/10.1249/01.mss.0000078924.61453.fb.