APA aipamena

Chillón, P., Hales, D., Vaughn, A., Gizlice, Z., Ni, A., & Ward, D. S. (2014). A cross-sectional study of demographic, environmental and parental barriers to active school travel among children in the United States. BioMed Central.

Chicago Style aipamena

Chillón, Palma, Derek Hales, Amber Vaughn, Ziya Gizlice, Andy Ni, and Dianne S. Ward. A Cross-sectional Study of Demographic, Environmental and Parental Barriers to Active School Travel Among Children in the United States. BioMed Central, 2014.

MLA aipamena

Chillón, Palma, et al. A Cross-sectional Study of Demographic, Environmental and Parental Barriers to Active School Travel Among Children in the United States. BioMed Central, 2014.