APA (7th ed.) Citation

Library of Congress. (1928). Classification: Class P, P-PA; Philology linguistic, classical philology, classical literature. U.S. GPO.

Chicago Style (17th ed.) Citation

Library of Congress. Classification: Class P, P-PA; Philology Linguistic, Classical Philology, Classical Literature. Washington: U.S. GPO, 1928.

MLA (9th ed.) Citation

Library of Congress. Classification: Class P, P-PA; Philology Linguistic, Classical Philology, Classical Literature. U.S. GPO, 1928.