Gaya APA

BUTTLE, F. (2014). Customer Relationship Management (Manajemen Hubungan Pelanggan) Concepts and Tools (1). : Bayumedia Publ..

Gaya MLA

BUTTLE, Francis. "Customer Relationship Management (Manajemen Hubungan Pelanggan) Concepts and Tools". 1 : Bayumedia Publ., 2014. Buku.