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BUTTLE, Francis. (2007). Customer relationship management = manajemen hubungan pelanggan: consept and tools . Amsterdam: Elsevier.

Gaya Chicago

BUTTLE, Francis. Customer relationship management = manajemen hubungan pelanggan: consept and tools. Amsterdam: Elsevier, 2007. Text.

Gaya MLA

BUTTLE, Francis. Customer relationship management = manajemen hubungan pelanggan: consept and tools. Amsterdam: Elsevier, 2007. Text.

Gaya Turabian

BUTTLE, Francis. Customer relationship management = manajemen hubungan pelanggan: consept and tools. Amsterdam: Elsevier, 2007. Print.