APA (7th ed.) Citation

United States Library of Congress Classification Division. (1956). Classification. Class P, subclasses PN, PR, PS, PZ: Literature (general), English and American literatures, fiction in English, juvenile literature, with supplementary pages. U. S. Government Printing Office.

Chicago Style (17th ed.) Citation

United States Library of Congress Classification Division. Classification. Class P, Subclasses PN, PR, PS, PZ: Literature (general), English and American Literatures, Fiction in English, Juvenile Literature, with Supplementary Pages. Washington: U. S. Government Printing Office, 1956.

MLA (9th ed.) Citation

United States Library of Congress Classification Division. Classification. Class P, Subclasses PN, PR, PS, PZ: Literature (general), English and American Literatures, Fiction in English, Juvenile Literature, with Supplementary Pages. U. S. Government Printing Office, 1956.