APA

Richards J. C., Hull J. & Proctor S. (2005). Interchange : student's book. 2-3. Cambridge: Cambridge University Press.

Chicago

Richards Jack C, Hull Jonathan and Proctor Susan. 2005. Interchange : student's book. 2-3. Cambridge: Cambridge University Press.

Harvard

Richards J. C., Hull J. and Proctor S. (2005). Interchange : student's book. 2-3. Cambridge: Cambridge University Press.

MLA

Richards Jack C, Hull Jonathan and Proctor Susan. Interchange : student's book. 2-3. Cambridge: Cambridge University Press. 2005.