APA

Richards J. C., . (2012). Interchange 1 :Student ́s Book. New York: Cambridge University Press.

Chicago

Richards Jack C, . 2012. Interchange 1 :Student ́s Book. New York: Cambridge University Press.

Harvard

Richards J. C., . (2012). Interchange 1 :Student ́s Book. New York: Cambridge University Press.

MLA

Richards Jack C, . Interchange 1 :Student ́s Book. New York: Cambridge University Press. 2012.