Library of Congress. Copyright Office. (1938). Catalog of copyright entries, new series, part 2, periodicals, volume 33 no. 4 [with index and title page to new series, part 2, volume 33, nos. 1-4, Jan℗Ư-Dec. 1938]. [s.n.].
Chicago Style (17th ed.) CitationLibrary of Congress. Copyright Office. Catalog of Copyright Entries, New Series, Part 2, Periodicals, Volume 33 No. 4 [with Index and Title Page to New Series, Part 2, Volume 33, Nos. 1-4, Jan℗Ư-Dec. 1938]. [Washington]: [s.n.], 1938.
MLA (9th ed.) CitationLibrary of Congress. Copyright Office. Catalog of Copyright Entries, New Series, Part 2, Periodicals, Volume 33 No. 4 [with Index and Title Page to New Series, Part 2, Volume 33, Nos. 1-4, Jan℗Ư-Dec. 1938]. [s.n.], 1938.
Warning: These citations may not always be 100% accurate.