Cita APA (7a ed.)

Richards, J. C. (1991). Interchange 2: Workbook. Cambridge University Press.

Cita Chicago Style (17a ed.)

Richards, Jack C. Interchange 2: Workbook. Cambridge, Reino Unido: Cambridge University Press, 1991.

Cita MLA (9a ed.)

Richards, Jack C. Interchange 2: Workbook. Cambridge University Press, 1991.