Cita APA (7th ed.)

KASMIR. (2005). Etika customer service.-- ed.1. RajaGrafindo Persada.

Cita Chicago (17th ed.)

KASMIR. Etika Customer Service.-- Ed.1. Jakarta: RajaGrafindo Persada, 2005.

Cita MLA (9th ed.)

KASMIR. Etika Customer Service.-- Ed.1. RajaGrafindo Persada, 2005.