Hilland, T. A., Ridgers, N. D., Stratton, G., & Fairclough, S. J. (2011). Associations Between Selected Demographic, Biological, School Environmental and Physical Education Based Correlates, and Adolescent Physical Activity. Pediatric Exercise Science, 23(1), 61. https://doi.org/10.1123/pes.23.1.61
Chicago Style (17th ed.) CitationHilland, Toni A., Nicola D. Ridgers, Gareth Stratton, and Stuart J. Fairclough. "Associations Between Selected Demographic, Biological, School Environmental and Physical Education Based Correlates, and Adolescent Physical Activity." Pediatric Exercise Science 23, no. 1 (2011): 61. https://doi.org/10.1123/pes.23.1.61.
MLA (9th ed.) CitationHilland, Toni A., et al. "Associations Between Selected Demographic, Biological, School Environmental and Physical Education Based Correlates, and Adolescent Physical Activity." Pediatric Exercise Science, vol. 23, no. 1, 2011, p. 61, https://doi.org/10.1123/pes.23.1.61.