एपीए उद्धरण

Buttle,Francis. (2009). Customer Relationship Management: Concepts and Tools. Butterworth - Heinmann.

शिकागो स्टाइल उद्धरण

Buttle,Francis. Customer Relationship Management: Concepts and Tools. Oxord: Butterworth - Heinmann, 2009.

एमएलए उद्धरण

Buttle,Francis. Customer Relationship Management: Concepts and Tools. Butterworth - Heinmann, 2009.