APA

Richards J. C., . (1994). Interchange : Intro Student´s Book. New York: Cambridge.

Chicago

Richards Jack C, . 1994. Interchange : Intro Student´s Book. New York: Cambridge.

Harvard

Richards J. C., . (1994). Interchange : Intro Student´s Book. New York: Cambridge.

MLA

Richards Jack C, . Interchange : Intro Student´s Book. New York: Cambridge. 1994.