Langdon-Dahm, M. (1986). Trade secrets: 25 proven success tools for working, dealing ... Learning development systems.
Chicago Style (17th ed.) CitationLangdon-Dahm, Martha. Trade Secrets: 25 Proven Success Tools for Working, Dealing ... Dayton: Learning development systems, 1986.
MLA (9th ed.) CitationLangdon-Dahm, Martha. Trade Secrets: 25 Proven Success Tools for Working, Dealing ... Learning development systems, 1986.
Warning: These citations may not always be 100% accurate.