APA引文

Ruth Gairns. (2002). Natural english (intermediate student's book). Oxford, NY: Oxford Univ. Press.

Trích dẫn kiểu Chicago

Ruth Gairns. Natural English (intermediate Student's Book). Oxford, NY: Oxford Univ. Press, 2002.

MLA引文

Ruth Gairns. Natural English (intermediate Student's Book). Oxford, NY: Oxford Univ. Press, 2002.

警告：這些引文格式不一定是100％准確.