APA (7e ed.) Bronvermelding

MM. (1991). Essentials Of Business Communication / Mary Ellen Guffey. PWS-Kent Publishing.

Chicago (17e ed.) Bronvermelding

MM. Essentials Of Business Communication / Mary Ellen Guffey. PWS-Kent Publishing, 1991.

MLA (8e ed.) Bronvermelding

MM. Essentials Of Business Communication / Mary Ellen Guffey. PWS-Kent Publishing, 1991.

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