United States Library of Congress. Classification Division. (1955). Classification. Class P, P-A: Philology, linguistics, classical philology, classical literature (with supplementary pages). U. S. Government Printing Office.
Citace podle Chicago (17th ed.)United States Library of Congress. Classification Division. Classification. Class P, P-A: Philology, Linguistics, Classical Philology, Classical Literature (with Supplementary Pages). Washington: U. S. Government Printing Office, 1955.
Citace podle MLA (9th ed.)United States Library of Congress. Classification Division. Classification. Class P, P-A: Philology, Linguistics, Classical Philology, Classical Literature (with Supplementary Pages). U. S. Government Printing Office, 1955.
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