APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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