APA引文

Didier, S. E., & Samuela Eckstut Didier. (2006). Focus on grammar 1. New York, NY: Pearson education.

Trích dẫn kiểu Chicago

Didier, Samuela Eckstut, và Samuela Eckstut Didier. Focus On Grammar 1. New York, NY: Pearson education, 2006.

MLA引文

Didier, Samuela Eckstut, và Samuela Eckstut Didier. Focus On Grammar 1. New York, NY: Pearson education, 2006.

警告：这些引文格式不一定是100％准确.