APA (7th ed.) Citation

Qian Chen, Yongfang Liu, Li Chen, Jie Chen, Ting Yang, Qian Cheng, & Tingyu Li. (2021). Vitamin A Levels Among Pre-School Children of Central and Western China. Frontiers Media S.A..

Chicago Style (17th ed.) Citation

Qian Chen, Yongfang Liu, Li Chen, Jie Chen, Ting Yang, Qian Cheng, and Tingyu Li. Vitamin A Levels Among Pre-School Children of Central and Western China. Frontiers Media S.A., 2021.

MLA (9th ed.) Citation

Qian Chen, et al. Vitamin A Levels Among Pre-School Children of Central and Western China. Frontiers Media S.A., 2021.