APA (7th ed.) Citation

Sallis, J. F., Cerin, E., Conway, T. L., Adams, M. A., Frank, L. D., Pratt, M., . . . Owen, N. (2016). Physical activity in relation to urban environments in 14 cities worldwide: A cross-sectional study. The Lancet (British edition), 387(10034), 2207-2217. https://doi.org/10.1016/S0140-6736(15)01284-2

Chicago Style (17th ed.) Citation

Sallis, James F., et al. "Physical Activity in Relation to Urban Environments in 14 Cities Worldwide: A Cross-sectional Study." The Lancet (British Edition) 387, no. 10034 (2016): 2207-2217. https://doi.org/10.1016/S0140-6736(15)01284-2.

MLA (9th ed.) Citation

Sallis, James F., et al. "Physical Activity in Relation to Urban Environments in 14 Cities Worldwide: A Cross-sectional Study." The Lancet (British Edition), vol. 387, no. 10034, 2016, pp. 2207-2217, https://doi.org/10.1016/S0140-6736(15)01284-2.