APA (7th ed.) Citation

Zhai, J., Guo, Y., Chen, C., Wang, X., Wang, Y., & Zou, Y. Inhalation of multiple pen caps causing bronchial foreign bodies: A rare case in an older child. BMC.

Chicago Style (17th ed.) Citation

Zhai, Jia, Yongsheng Guo, Chunlei Chen, Xuelin Wang, Yifan Wang, and Ying-Xue Zou. Inhalation of Multiple Pen Caps Causing Bronchial Foreign Bodies: A Rare Case in an Older Child. BMC.

MLA (9th ed.) Citation

Zhai, Jia, et al. Inhalation of Multiple Pen Caps Causing Bronchial Foreign Bodies: A Rare Case in an Older Child. BMC.