Library of Congress. Catalog Division. (1931). List of American doctoral dissertations printed in 1931, received in Catalogue Division from Jan. 1931 to Sept. 1932 with supplement to earlier lists. GPO.
Chicago Style (17th ed.) CitationLibrary of Congress. Catalog Division. List of American Doctoral Dissertations Printed in 1931, Received in Catalogue Division from Jan. 1931 to Sept. 1932 with Supplement to Earlier Lists. [Washington]: GPO, 1931.
MLA (9th ed.) CitationLibrary of Congress. Catalog Division. List of American Doctoral Dissertations Printed in 1931, Received in Catalogue Division from Jan. 1931 to Sept. 1932 with Supplement to Earlier Lists. GPO, 1931.
Warning: These citations may not always be 100% accurate.