APA (7th ed.) Citation

Kirn, E., & Jack, D. (1990). Interactions I. A communicative grammar (2a. ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Kirn, Elaine, and Darcy Jack. Interactions I. A Communicative Grammar. 2a. ed. Nueva York: McGraw-Hill, 1990.

MLA (9th ed.) Citation

Kirn, Elaine, and Darcy Jack. Interactions I. A Communicative Grammar. 2a. ed. McGraw-Hill, 1990.