APA引文

Dellar, H., & Walkley, A. (2019). Outcomes: Upper Intermediate - Student's Book. United Kingdom: National Geographic Learning.

Trích dẫn kiểu Chicago

Dellar, Hugh, và Andrew Walkley. Outcomes: Upper Intermediate - Student's Book. United Kingdom: National Geographic Learning, 2019.

MLA引文

Dellar, Hugh, và Andrew Walkley. Outcomes: Upper Intermediate - Student's Book. United Kingdom: National Geographic Learning, 2019.

警告：这些引文格式不一定是100％准确.