Gaya APA

Murphy, H, A., Peck, C, E. (1980). Effective business communications : Grolier business library (-). Amarika Serikat: Grolier business library.

Gaya MLA

Murphy, Herta, A.., Peck, Charles, E.. "Effective business communications : Grolier business library". - Amarika Serikat: Grolier business library, 1980. UMUM.