APA (7th ed.) Citation

Xu, K., Zhang, X., Long, X., Lu, X., & Liu, Z. An environmental study of tracheostomy on eight COVID-19 patients. SAGE Publishing.

Chicago Style (17th ed.) Citation

Xu, Kai, Xin-Hao Zhang, Xiao-Bo Long, Xiang Lu, and Zheng Liu. An Environmental Study of Tracheostomy on Eight COVID-19 Patients. SAGE Publishing.

MLA (9th ed.) Citation

Xu, Kai, et al. An Environmental Study of Tracheostomy on Eight COVID-19 Patients. SAGE Publishing.