MLA

Gunn, S. William A, et al. Concepts and Practice of Humanitarian Medicine. Springer New York, 2008.

APA

Gunn, S. William A, Gunn, S. William, & Masellis, M., & Masellis, M. (2008). Concepts and Practice of Humanitarian Medicine. Springer New York.

Chicago

Gunn, S. William A., S. William Gunn, M Masellis, and Michele Masellis. Concepts and Practice of Humanitarian Medicine. : Springer New York, 2008.