Bulander, R. (2008). Customer-Relationship-Management-Systeme unter Nutzung mobiler Endgeräte. KIT Scientific Publishing.
Tohutoru Kātū Chicago (17th ed.)Bulander, Rebecca. Customer-Relationship-Management-Systeme Unter Nutzung Mobiler Endgeräte. KIT Scientific Publishing, 2008.
Tohutoro MLA (9th ed.)Bulander, Rebecca. Customer-Relationship-Management-Systeme Unter Nutzung Mobiler Endgeräte. KIT Scientific Publishing, 2008.
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