APA (7th ed.) Citation

University of Chicago. Home-Study Dept & Ballert, A. G. (1953). Geography and world affairs: Geography 151.

Chicago Style (17th ed.) Citation

University of Chicago. Home-Study Dept and Albert G. Ballert. Geography and World Affairs: Geography 151. Chicago, 1953.

MLA (8th ed.) Citation

University of Chicago. Home-Study Dept and Albert G. Ballert. Geography and World Affairs: Geography 151. 1953.