MLA

Nugues, Pierre M, A Bundy, and Jörg Siekmann. An Introduction to Language Processing with Perl and Prolog. Springer Berlin Heidelberg, 2006.

APA

Nugues, P. M, Bundy, A., & Siekmann, J. (2006). An Introduction to Language Processing with Perl and Prolog. Springer Berlin Heidelberg.

Chicago

Nugues, Pierre M., A Bundy, and Jörg Siekmann. An Introduction to Language Processing with Perl and Prolog. : Springer Berlin Heidelberg, 2006.