APA Alıntı

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

Chicago Stili Alıntı

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

MLA Alıntı

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