MLA

Guo, and Xingshun Qi. Variceal Bleeding In Liver Cirrhosis. Springer Singapore, 2021.

APA

Guo, G., & Qi, X. (2021). Variceal bleeding in liver cirrhosis. Springer Singapore.

Chicago

Guo, and Xingshun Qi. Variceal Bleeding In Liver Cirrhosis. : Springer Singapore, 2021.