Library of Congress. Subject Cataloging Division, Martel, C., Bay, J. C., Johnston, W. D., Schmidt, A. F. W., & Wolcott, J. D. (1911). Classification. Government Printing Office.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLibrary of Congress. Subject Cataloging Division, Charles Martel, J. Christian Bay, William Dawson Johnston, A. F. W. Schmidt, और J. D. Wolcott. Classification. Washington: Government Printing Office, 1911.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLibrary of Congress. Subject Cataloging Division, et al. Classification. Government Printing Office, 1911.
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