APA Citatie

Guffey, M. E. (1999). Business English (6th ed.). Cincinnati, Ohio: South-Western College.

Chicago Style citaat

Guffey, Mary Ellen. Business English. 6th ed. Cincinnati, Ohio: South-Western College, 1999.

MLA citatie

Guffey, Mary Ellen. Business English. 6th ed. Cincinnati, Ohio: South-Western College, 1999.

Let op: Deze citaties zijn niet altijd 100% accuraat.