Citazione Stile APA (7a Edizione)

Whitby, N. (2006). Business benchmark: Pre-intermediate to intermediate, preliminary. Teacher's resource book (1a. ed.). Cambridge University.

Citazione stile Chigago Style (17a edizione)

Whitby, Norman. Business Benchmark: Pre-intermediate to Intermediate, Preliminary. Teacher's Resource Book. 1a. ed. Cambridge: Cambridge University, 2006.

Citatione MLA (9a ed.)

Whitby, Norman. Business Benchmark: Pre-intermediate to Intermediate, Preliminary. Teacher's Resource Book. 1a. ed. Cambridge University, 2006.