Berg, H. D., & Anderson, H. R. (1959). The history of our world. Houghton Mifflin Co..
Lua i Stíl Chicago (17ú heag.)Berg, Harry D., agus Howard R. Anderson. The History of Our World. Boston: Houghton Mifflin Co., 1959.
Lua MLA (8ú heag.)Berg, Harry D., agus Howard R. Anderson. The History of Our World. Houghton Mifflin Co., 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.