Library of Congress. Map Division & Phillips, P. L. (1921). Notes on cataloging, care, and classification of maps and atlases, including list of publications compiled in Division of Maps. U.S. GPO.
Chicago Style (17th ed.) CitationLibrary of Congress. Map Division and Philip Lee Phillips. Notes on Cataloging, Care, and Classification of Maps and Atlases, Including List of Publications Compiled in Division of Maps. Washington: U.S. GPO, 1921.
MLA (9th ed.) CitationLibrary of Congress. Map Division and Philip Lee Phillips. Notes on Cataloging, Care, and Classification of Maps and Atlases, Including List of Publications Compiled in Division of Maps. U.S. GPO, 1921.
Warning: These citations may not always be 100% accurate.