Katz, W. A. (1969). Introduction to reference work: Basic information sources. New York: McGraw-Hill.
Trích dẫn kiểu ChicagoKatz, William A. Introduction to Reference Work: Basic Information Sources. New York: McGraw-Hill, 1969.
Deismireacht MLAKatz, William A. Introduction to Reference Work: Basic Information Sources. New York: McGraw-Hill, 1969.
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