Dyfyniad APA

Greaves, R. L. (1990). Civilizations of the world: The human adventure. Harper & Row, Publishers.

Dyfyniad Arddull Chicago

Greaves, Richard L. Civilizations of the World: The Human Adventure. New York: Harper & Row, Publishers, 1990.

Dyfyniad MLA

Greaves, Richard L. Civilizations of the World: The Human Adventure. Harper & Row, Publishers, 1990.

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