APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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