Martin, W. B. (2005). Quality customer service: Cara jitu memikat hati pelanggan. PPM.
Chicago Style (17th ed.) CitationMartin, William B. Quality Customer Service: Cara Jitu Memikat Hati Pelanggan. PPM, 2005.
MLA (8th ed.) CitationMartin, William B. Quality Customer Service: Cara Jitu Memikat Hati Pelanggan. PPM, 2005.
Warning: These citations may not always be 100% accurate.