Mitchell, E., & Walters, S. A. (1995). Document delivery services: Issues and answers. Learned Information.
Citace podle Chicago (17th ed.)Mitchell, Eleanor, a Sheilla A. Walters. Document Delivery Services: Issues and Answers. Medford, NJ: Learned Information, 1995.
Citace podle MLA (8th ed.)Mitchell, Eleanor, a Sheilla A. Walters. Document Delivery Services: Issues and Answers. Learned Information, 1995.
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