Gaya APA

TSCHOHL, J. (2003). ACHIEVING EXCELLENCE : THROUGH CUSTOMER SERVICE, UNGGUL BERSAING MELALUI LAYANAN PELANGGAN . JAKARTA: GRAMEDIA PUSTAKA UTAMA.

Gaya MLA

TSCHOHL, JOHN. "ACHIEVING EXCELLENCE : THROUGH CUSTOMER SERVICE, UNGGUL BERSAING MELALUI LAYANAN PELANGGAN". JAKARTA: GRAMEDIA PUSTAKA UTAMA, 2003. Prodi S1 Manajemen.