MLA

Chen, and Lieping Chen. Cd137 Pathway: Immunology and Diseases. Springer US, 2007.

APA

Chen, C., & Chen, L. (2007). CD137 Pathway: Immunology and Diseases. Springer US.

Chicago

Chen, and Lieping Chen. CD137 Pathway: Immunology and Diseases. : Springer US, 2007.