APA استشهاد

Trefousse, H. L. (1971). causes of the civil war: Institutional failure or human blunder? Holt, Rinehart and Winston, Inc.

استشهاد بنمط شيكاغو

Trefousse, Hans L. Causes of the Civil War: Institutional Failure or Human Blunder? New York: Holt, Rinehart and Winston, Inc, 1971.

MLA استشهاد

Trefousse, Hans L. Causes of the Civil War: Institutional Failure or Human Blunder? Holt, Rinehart and Winston, Inc, 1971.