Roper, F. W., & Boorkman, J. A. (1980). Introduction to reference sources in the health sciences. Medical Library Association.
Citace podle Chicago (17th ed.)Roper, Fred W., a Jo Anne Boorkman. Introduction to Reference Sources in the Health Sciences. Chicago: Medical Library Association, 1980.
Citace podle MLA (8th ed.)Roper, Fred W., a Jo Anne Boorkman. Introduction to Reference Sources in the Health Sciences. Medical Library Association, 1980.
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