Cita APA

Sánchez, H., Frías, A., Tejeda, E., Tirado, I., González, N., & Ramos, D. (2006). English for professional success. Thomson.

Citación estilo Chicago

Sánchez, Héctor, Arturo Frías, Eric Tejeda, Isa Tirado, Norma González, and David Ramos. English for Professional Success. Boston: Thomson, 2006.

Cita MLA

Sánchez, Héctor, et al. English for Professional Success. Boston: Thomson, 2006.