MLA

Muñoz, Rafael, et al. Natural Language Processing and Information Systems. Springer Berlin Heidelberg, 2011.

APA

Muñoz, R., Kanade, T., Montoyo, A., & Métais, E. (2011). Natural Language Processing and Information Systems. Springer Berlin Heidelberg.

Chicago

Muñoz, Rafael, Takeo Kanade, Andrés Montoyo, and Elisabeth Métais. Natural Language Processing and Information Systems. : Springer Berlin Heidelberg, 2011.