MM. (1991). Essentials Of Business Communication / Mary Ellen Guffey. PWS-Kent Publishing.
Chicago (17e ed.) BronvermeldingMM. Essentials Of Business Communication / Mary Ellen Guffey. PWS-Kent Publishing, 1991.
MLA (8e ed.) BronvermeldingMM. Essentials Of Business Communication / Mary Ellen Guffey. PWS-Kent Publishing, 1991.
Let op: Deze citaties zijn niet altijd 100% accuraat.