Sotheby & Co. (London, England), Xerox University Microfilms, & Sotheby Parke-Bernet Publications. (1973). Catalogues of sales: A guide to the microfilm collection. Xerox University Microfilms.
Citace podle Chicago (17th ed.)Sotheby & Co. (London, England), Xerox University Microfilms, a Sotheby Parke-Bernet Publications. Catalogues of Sales: A Guide to the Microfilm Collection. Ann Arbor, MI: Xerox University Microfilms, 1973.
Citace podle MLA (8th ed.)Sotheby & Co. (London, England), et al. Catalogues of Sales: A Guide to the Microfilm Collection. Xerox University Microfilms, 1973.
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