Trefousse, H. L. (1971). causes of the civil war: Institutional failure or human blunder? Holt, Rinehart and Winston, Inc.
Dyfyniad Arddull ChicagoTrefousse, Hans L. Causes of the Civil War: Institutional Failure or Human Blunder? New York: Holt, Rinehart and Winston, Inc, 1971.
Dyfyniad MLATrefousse, Hans L. Causes of the Civil War: Institutional Failure or Human Blunder? Holt, Rinehart and Winston, Inc, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.