Cita APA (7th ed.)
Langdon-Dahm, M. (1986). Trade secrets: 25 proven success tools for working, dealing ... Learning development systems.
Cita Chicago (17th ed.)
Langdon-Dahm, Martha. Trade Secrets: 25 Proven Success Tools for Working, Dealing ... Dayton: Learning development systems, 1986.
Cita MLA (9th ed.)
Langdon-Dahm, Martha. Trade Secrets: 25 Proven Success Tools for Working, Dealing ... Learning development systems, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.