MLA

Kerr, David; Johnson, Rebecca, and Rebecca Johnson. Immunotherapy for Gastrointestinal Cancer. Springer International Publishing, 2017.

APA

Kerr, R., & Johnson, R. (2017). Immunotherapy for Gastrointestinal Cancer. Springer International Publishing.

Chicago

Kerr, David; Johnson, Rebecca, and Rebecca Johnson. Immunotherapy for Gastrointestinal Cancer. : Springer International Publishing, 2017.