Library of Congress. Photoduplication Service. (1980). Specifications for microfilming manuscripts. Library of Congress.
Citace podle Chicago (17th ed.)Library of Congress. Photoduplication Service. Specifications for Microfilming Manuscripts. Washington, D.C.: Library of Congress, 1980.
Citace podle MLA (8th ed.)Library of Congress. Photoduplication Service. Specifications for Microfilming Manuscripts. Library of Congress, 1980.
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