Dyfyniad APA

Berg, H. D., & Anderson, H. R. (1959). The history of our world. Houghton Mifflin Co..

Dyfyniad Arddull Chicago

Berg, Harry D., and Howard R. Anderson. The History of Our World. Boston: Houghton Mifflin Co., 1959.

Dyfyniad MLA

Berg, Harry D., and Howard R. Anderson. The History of Our World. Houghton Mifflin Co., 1959.

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