Villanueva, R., & Escresa, A. L. (2012). Call center minimum standard guide. DZUP.
Chicagoスタイル(17版)引用形式Villanueva, Raymund, , Anna Leah Escresa. Call Center Minimum Standard Guide. Quezon City: DZUP, 2012.
MLA(9版)引用形式Villanueva, Raymund, , Anna Leah Escresa. Call Center Minimum Standard Guide. DZUP, 2012.
警告: この引用は必ずしも正確ではありません.