United States Library of Congress. Classification Division. (1956). Classification. Class P, subclass PJ-PM: Languages and literatures of Asia, Africa, Oceania, America, mixed languages, artificial languages, with supplementary pages. U. S. Government Printing Office.
Style de citation Chicago (17e éd.)United States Library of Congress. Classification Division. Classification. Class P, Subclass PJ-PM: Languages and Literatures of Asia, Africa, Oceania, America, Mixed Languages, Artificial Languages, with Supplementary Pages. Washington: U. S. Government Printing Office, 1956.
Style de citation MLA (9e éd.)United States Library of Congress. Classification Division. Classification. Class P, Subclass PJ-PM: Languages and Literatures of Asia, Africa, Oceania, America, Mixed Languages, Artificial Languages, with Supplementary Pages. U. S. Government Printing Office, 1956.