APA引文

John, R., & Buchan, J. (2008). The thirty-nine steps: Level 3. Harlow: Pearson Education.

Trích dẫn kiểu Chicago

John, Roland., và John Buchan. The Thirty-nine Steps: Level 3. Harlow: Pearson Education, 2008.

MLA引文

John, Roland., và John Buchan. The Thirty-nine Steps: Level 3. Harlow: Pearson Education, 2008.

警告：这些引文格式不一定是100％准确.