Mauzo : Tofauti kati ya masahihisho

Mauzo yanaweza kuwa au kupitia:<ref>{{Cite book|title=Compendium of Professional Selling|publisher=United Professional Sales Association|date=n.d.|url=http://www.upsa-intl.org/index-4-cops.htm|isbn=<!--? -->}}</ref>

* Ombi la pendekezo<br>

* Biashara kwa biashara<br><ref>{{Cite journal|url=http://cep.lse.ac.uk/seminarpapers/10-02-03-BRY.pdf|title=What To Do When Stakeholders Matter: A Guide to Stakeholder Identification and Analysis Techniques|last=John|first=Bryson|date=10 Feb 2003|journal=London School of Economics and Political Science|doi=|pmid=|access-date=}}</ref>