APA (7th ed.) Zitazioa
Rossi, I. D. (2011). Vtiger CRM beginner's guide: Record and consolidate all your customer information with vtiger CRM. Packt Pub. Ltd..
Chicago Style (17th ed.) Zitazioa
Rossi, Ian D. Vtiger CRM Beginner's Guide: Record and Consolidate All Your Customer Information with Vtiger CRM. Birmingham, U.K.: Packt Pub. Ltd., 2011.
MLA (9th ed.) Zitazioa
Rossi, Ian D. Vtiger CRM Beginner's Guide: Record and Consolidate All Your Customer Information with Vtiger CRM. Packt Pub. Ltd., 2011.
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