Cita APA

Villanueva, R., & Escresa, A. L. (2012). Call center minimum standard guide. DZUP.

Citación estilo Chicago

Villanueva, Raymund, and Anna Leah Escresa. Call Center Minimum Standard Guide. Quezon City: DZUP, 2012.

Cita MLA

Villanueva, Raymund, and Anna Leah Escresa. Call Center Minimum Standard Guide. DZUP, 2012.