MLA
Ward, Dianne, et al. Characteristics Associated with Us Walk to School Programs: A Cross-sectional Study. BioMed Central Ltd, 2007. https://doi.org/10.17615/p18g-qk55
APA
Ward, D., Linnan, L., Vaughn, A., Neelon, B., Martin, S., & Fulton, J. (2007). Characteristics Associated with US Walk to School Programs: A cross-sectional study. BioMed Central Ltd. https://doi.org/10.17615/p18g-qk55
Chicago
Ward, Dianne, Laura Linnan, Amber Vaughn, Brian Neelon, Sarah L Martin, and Janet E Fulton. 2007. Characteristics Associated with Us Walk to School Programs: A Cross-Sectional Study. BioMed Central Ltd. https://doi.org/10.17615/p18g-qk55