MLA

Martínez, et al. The 2-tuple Linguistic Model. Springer International Publishing, 2015.

APA

Martínez, M., Martínez, L., Herrera, F., & Rodriguez, R. M. (2015). The 2-tuple Linguistic Model. Springer International Publishing.

Chicago

Martínez, Luis Martínez, Francisco Herrera, and Rosa M Rodriguez. The 2-Tuple Linguistic Model. : Springer International Publishing, 2015.