Hansal, A., Weigl, M., & Bull, T. (2010). Oracle Siebel CRM 8 installation and management: Install, configure, and manage a robust customer relationship management system using Siebel CRM. Packt Pub..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hansal, Alexander, Michael Weigl, و Tim Bull. Oracle Siebel CRM 8 Installation and Management: Install, Configure, and Manage a Robust Customer Relationship Management System Using Siebel CRM. Birmingham, U.K.: Packt Pub., 2010.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Hansal, Alexander, et al. Oracle Siebel CRM 8 Installation and Management: Install, Configure, and Manage a Robust Customer Relationship Management System Using Siebel CRM. Packt Pub., 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.