Cita APA

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

Citación estilo Chicago

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

Cita MLA

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