APA (7th ed.) Citation

University Microfilms International, University Microfilms, & Xerox University Microfilms. (1969). Dissertation abstracts international. University Microfilms International.

Chicago Style (17th ed.) Citation

University Microfilms International, University Microfilms, and Xerox University Microfilms. Dissertation Abstracts International. Ann Arbor, Mich.: University Microfilms International, 1969.

MLA (8th ed.) Citation

University Microfilms International, et al. Dissertation Abstracts International. University Microfilms International, 1969.