Gaya APA
Buttle, Francis. (2004).
Customer relationship management : concept and tools .
Boston:
Elsevier.
Gaya Chicago
Buttle, Francis.
Customer relationship management : concept and tools.
Boston:
Elsevier,
2004.
Text.
Gaya MLA
Buttle, Francis.
Customer relationship management : concept and tools.
Boston:
Elsevier,
2004.
Text.
Gaya Turabian
Buttle, Francis.
Customer relationship management : concept and tools.
Boston:
Elsevier,
2004.
Print.