Dyfyniad APA
Sigband, N. B., & Bell, A. H. (1989). Communication for management and business (5th ed.). Scott, Foresman.
Dyfyniad Arddull Chicago
Sigband, Norman B., and Arthur H. Bell. Communication for Management and Business. 5th ed. Glenview, Ill.: Scott, Foresman, 1989.
Dyfyniad MLA
Sigband, Norman B., and Arthur H. Bell. Communication for Management and Business. 5th ed. Scott, Foresman, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.