MLA

Du, Chao-Hai, and Pu-Kun Liu. Millimeter-wave Gyrotron Traveling-wave Tube Amplifiers. Springer Berlin Heidelberg, 2014.

APA

Du, C., & Liu, P. (2014). Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers. Springer Berlin Heidelberg.

Chicago

Du, Chao-Hai, and Pu-Kun Liu. Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers. : Springer Berlin Heidelberg, 2014.