Buchan, J. (2001). The Thirty Nine Steps.
Chicago Style (17. basım) AtıfBuchan, John. The Thirty Nine Steps. Ankara, 2001.
MLA (9th ed.) AtıfBuchan, John. The Thirty Nine Steps. 2001.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..
Buchan, J. (2001). The Thirty Nine Steps.
Chicago Style (17. basım) AtıfBuchan, John. The Thirty Nine Steps. Ankara, 2001.
MLA (9th ed.) AtıfBuchan, John. The Thirty Nine Steps. 2001.