MLA

Tyring, Stephen K, and Stephen Keith Tyring. Mucosal Immunology and Virology. Springer London, 2006.

APA

Tyring, S. K, & Tyring, S. Keith. (2006). Mucosal Immunology and Virology. Springer London.

Chicago

Tyring, Stephen K., and Stephen Keith Tyring. Mucosal Immunology and Virology. : Springer London, 2006.