Heeper Astrid. (2010). Sales negotiation. b.jain publishers.
Chicago Style (17th ed.) CitationHeeper Astrid. Sales Negotiation. India: b.jain publishers, 2010.
MLA (9th ed.) CitationHeeper Astrid. Sales Negotiation. b.jain publishers, 2010.
Warning: These citations may not always be 100% accurate.