Guo, Y., & Jonas, J. B. (2013). Outdoor activity and myopia among primary students in rural and urban regions of Beijing. Ophthalmology, 120(2), .
Chicago Style (17th ed.) CitationGuo, Yin, and Jost B. Jonas. "Outdoor Activity and Myopia Among Primary Students in Rural and Urban Regions of Beijing." Ophthalmology 120, no. 2 (2013).
MLA (9th ed.) CitationGuo, Yin, and Jost B. Jonas. "Outdoor Activity and Myopia Among Primary Students in Rural and Urban Regions of Beijing." Ophthalmology, vol. 120, no. 2, 2013.
Warning: These citations may not always be 100% accurate.