Cita APA

Werner, P. K., Church, M. M., & Baker, L. R. (1997). Interactions two: A communicative grammar (3rd ed.). McGraw-Hill.

Citación estilo Chicago

Werner, Patricia K., Mary Mitchell Church, and Lida R. Baker. Interactions Two: A Communicative Grammar. 3rd ed. New York: McGraw-Hill, 1997.

Cita MLA

Werner, Patricia K., et al. Interactions Two: A Communicative Grammar. 3rd ed. McGraw-Hill, 1997.