APA

Whitby N., . (2006). Business Benchmark. Pre-Intermediate to Intermediate. Cambridge: Cambridge University Press.

Chicago

Whitby N, . 2006. Business Benchmark. Pre-Intermediate to Intermediate. Cambridge: Cambridge University Press.

Harvard

Whitby N., . (2006). Business Benchmark. Pre-Intermediate to Intermediate. Cambridge: Cambridge University Press.

MLA

Whitby N, . Business Benchmark. Pre-Intermediate to Intermediate. Cambridge: Cambridge University Press. 2006.