APA (7th ed.) Citation

United States Library of Congress Classification Division. (1955). Classification. Class P, subclass PQ, part 2: Italian, Spanish, and Portuguese literatures, with supplementary pages. U. S. Government Printing Office.

Chicago Style (17th ed.) Citation

United States Library of Congress Classification Division. Classification. Class P, Subclass PQ, Part 2: Italian, Spanish, and Portuguese Literatures, with Supplementary Pages. Washington: U. S. Government Printing Office, 1955.

MLA (9th ed.) Citation

United States Library of Congress Classification Division. Classification. Class P, Subclass PQ, Part 2: Italian, Spanish, and Portuguese Literatures, with Supplementary Pages. U. S. Government Printing Office, 1955.