Citazione APA

(1993). Business English certificate: A guide to the business English certificate. England: University of Cambridge.

Stile di citazione Chicago

Business English Certificate: A Guide to the Business English Certificate. England: University of Cambridge, 1993.

Citazione MLA

Business English Certificate: A Guide to the Business English Certificate. England: University of Cambridge, 1993.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.