Porter, D. B. (1969). A working bibliography on the Negro in the United States. Xerox, University Microfilms.
Chicago Style (17th ed.) CitationPorter, Dorothy Burnett. A Working Bibliography on the Negro in the United States. [Ann Arbor, Mich.?]: Xerox, University Microfilms, 1969.
MLA (9th ed.) CitationPorter, Dorothy Burnett. A Working Bibliography on the Negro in the United States. Xerox, University Microfilms, 1969.
Warning: These citations may not always be 100% accurate.