University Microfilms International. (1989). Dissertation abstracts international. UMI.
Chicago Style (17th ed.) CitationUniversity Microfilms International. Dissertation Abstracts International. Ann Arbor, Mich.: UMI, 1989.
MLA (8th ed.) CitationUniversity Microfilms International. Dissertation Abstracts International. UMI, 1989.
Warning: These citations may not always be 100% accurate.