Richardson, E. C. (1901). Classification, theoretical and practical... Together with an appendix containing an essay towards a bibliographical history of systems of classification. C. Scribner's Sons.
Citace podle Chicago (17th ed.)Richardson, Ernest Cushing. Classification, Theoretical and Practical... Together with an Appendix Containing an Essay Towards a Bibliographical History of Systems of Classification. New York: C. Scribner's Sons, 1901.
Citace podle MLA (9th ed.)Richardson, Ernest Cushing. Classification, Theoretical and Practical... Together with an Appendix Containing an Essay Towards a Bibliographical History of Systems of Classification. C. Scribner's Sons, 1901.
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