Sigman, N. B. (1994). Communication for managers (6th. ed.). College Division South-Western Publishing Co.
Chicago Style (17th ed.) CitationSigman, Norman B. Communication for Managers. 6th. ed. Ohio: College Division South-Western Publishing Co, 1994.
MLA (8th ed.) CitationSigman, Norman B. Communication for Managers. 6th. ed. College Division South-Western Publishing Co, 1994.
Warning: These citations may not always be 100% accurate.