Gruenberg, M. L. (2014). Buying and selling information: A guide for information professionals and salespeople to build mutual success. Information Today, Inc..
Citace podle Chicago (17th ed.)Gruenberg, Michael L. Buying and Selling Information: A Guide for Information Professionals and Salespeople to Build Mutual Success. Medford, New Jersey: Information Today, Inc., 2014.
Citace podle MLA (9th ed.)Gruenberg, Michael L. Buying and Selling Information: A Guide for Information Professionals and Salespeople to Build Mutual Success. Information Today, Inc., 2014.
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