APA

Wallwork A., . (2000). Discussions A - Z. Intermediate. Cambridge: Cambridge University Press.

Chicago

Wallwork A, . 2000. Discussions A - Z. Intermediate. Cambridge: Cambridge University Press.

Harvard

Wallwork A., . (2000). Discussions A - Z. Intermediate. Cambridge: Cambridge University Press.

MLA

Wallwork A, . Discussions A - Z. Intermediate. Cambridge: Cambridge University Press. 2000.