Molnar, B. E., Buka, S. L., Bull, F., & Gortmaker, S. (2004). Unsafe to play?: Neighborhood disorder and lack of safety predict reduced physical activity among urban children and adolescents. American journal of health promotion, 18, 38-46. doi:10.4278/0890-1171-18.5.378
Cita Chicago Style (17a ed.)Molnar, Beth E., Stephen L. Buka, F.C Bull, y S.L Gortmaker. "Unsafe to Play?: Neighborhood Disorder and Lack of Safety Predict Reduced Physical Activity Among Urban Children and Adolescents." American Journal of Health Promotion 18 (2004): 38-46. https://doi.org/10.4278/0890-1171-18.5.378.
Cita MLA (9a ed.)Molnar, Beth E., et al. "Unsafe to Play?: Neighborhood Disorder and Lack of Safety Predict Reduced Physical Activity Among Urban Children and Adolescents." American Journal of Health Promotion, vol. 18, 2004, pp. 38-46, https://doi.org/10.4278/0890-1171-18.5.378.
