Procter-Gray, E., Leveille, S. G., Hannan, M. T., Cheng, J., Kane, K., & Li, W. Variations in Community Prevalence and Determinants of Recreational and Utilitarian Walking in Older Age. Wiley.
Chicago Style (17th ed.) CitationProcter-Gray, Elizabeth, Suzanne G. Leveille, Marian T. Hannan, Jie Cheng, Kevin Kane, and Wenjun Li. Variations in Community Prevalence and Determinants of Recreational and Utilitarian Walking in Older Age. Wiley.
MLA (9th ed.) CitationProcter-Gray, Elizabeth, et al. Variations in Community Prevalence and Determinants of Recreational and Utilitarian Walking in Older Age. Wiley.
Warning: These citations may not always be 100% accurate.