APA

Shields C., Richards J. C., . (1998). New Interchange 1. Cambridge: Cambridge University Press.

Chicago

Shields C, Richards J C, . 1998. New Interchange 1. Cambridge: Cambridge University Press.

Harvard

Shields C., Richards J. C., . (1998). New Interchange 1. Cambridge: Cambridge University Press.

MLA

Shields C, Richards J C, . New Interchange 1. Cambridge: Cambridge University Press. 1998.