University of Maryland Open University. Course Team, Hines, V. D., & Whitten, P. B. (1981). Understanding the 20th century: A course guide. New Viewpoints.
Chicago Style (17th ed.) CitationUniversity of Maryland Open University. Course Team, V. Douglas Hines, and Peter B. Whitten. Understanding the 20th Century: A Course Guide. New York: New Viewpoints, 1981.
MLA (8th ed.) CitationUniversity of Maryland Open University. Course Team, et al. Understanding the 20th Century: A Course Guide. New Viewpoints, 1981.
Warning: These citations may not always be 100% accurate.