Dyfyniad APA

Snyder, L. L. (1971). Great turning points in history. Van Nostrand Reinhold.

Dyfyniad Arddull Chicago

Snyder, Louis Leo. Great Turning Points in History. New York: Van Nostrand Reinhold, 1971.

Dyfyniad MLA

Snyder, Louis Leo. Great Turning Points in History. Van Nostrand Reinhold, 1971.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.