APA引用形式

Frankel, I., & Irene Frankel. (2008). Center stage 1: Grammar to communicate. White Plains, NY: Pearson Education.

シカゴスタイル引用形

Frankel, Irene, , Irene Frankel. Center Stage 1: Grammar to Communicate. White Plains, NY: Pearson Education, 2008.

MLA引用形式

Frankel, Irene, , Irene Frankel. Center Stage 1: Grammar to Communicate. White Plains, NY: Pearson Education, 2008.

警告: この引用は必ずしも正確ではありません.