APA

Richards J. C., Hull J. & Proctor S. (1997). New Interchange 3. Class audio cassette. United States: Cambridge University Press.

Chicago

Richards Jack C, Hull Jonathan and Proctor Susan. 1997. New Interchange 3. Class audio cassette. United States: Cambridge University Press.

Harvard

Richards J. C., Hull J. and Proctor S. (1997). New Interchange 3. Class audio cassette. United States: Cambridge University Press.

MLA

Richards Jack C, Hull Jonathan and Proctor Susan. New Interchange 3. Class audio cassette. United States: Cambridge University Press. 1997.