MLA

Baldoni, Maria Welleda, et al. Elementary Number Theory, Cryptography and Codes. Springer Berlin Heidelberg, 2009.

APA

Baldoni, M. Welleda, Cattaneo, G. Maria Piacentini, Ciliberto, C., Gewurz, D., Piacentini Cattaneo, G. M, & Piacentini Cattaneo, G. Maria. (2009). Elementary Number Theory, Cryptography and Codes. Springer Berlin Heidelberg.

Chicago

Baldoni, Maria Welleda, Giulia Maria Piacentini Cattaneo, Ciro Ciliberto, Daniele Gewurz, G. M Piacentini Cattaneo, and Giulia Maria Piacentini Cattaneo. Elementary Number Theory, Cryptography and Codes. : Springer Berlin Heidelberg, 2009.