APA

Hull Jonathan, Richards J. C. & Proctor Susan. (2003). New interchange : english for international communication. Madrid: Cambridge University Press.

Chicago

Hull Jonathan, Richards Jack C and Proctor Susan. 2003. New interchange : english for international communication. Madrid: Cambridge University Press.

Harvard

Hull Jonathan, Richards J. C. and Proctor Susan. (2003). New interchange : english for international communication. Madrid: Cambridge University Press.

MLA

Hull Jonathan, Richards Jack C and Proctor Susan. New interchange : english for international communication. Madrid: Cambridge University Press. 2003.