APA

Richards J. C., Hull J. & Proctor S. (2001). New Interchange. English for international communication. : Cambridge University Press.

Chicago

Richards J C, Hull J and Proctor S. 2001. New Interchange. English for international communication. : Cambridge University Press.

Harvard

Richards J. C., Hull J. and Proctor S. (2001). New Interchange. English for international communication. : Cambridge University Press.

MLA

Richards J C, Hull J and Proctor S. New Interchange. English for international communication. : Cambridge University Press. 2001.