Schmittroth, J., Maxfield, D. M., Lucas, A. F., & Novallo, A. (1984). Online database search services directory: A reference and referral guide to libraries, information firms, and other sources providing computerized information retrieval and associated services using publicy available online detabases. Gale.
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Cita Chicago Style (17a ed.)
Schmittroth, John, Doris Morris Maxfield, Amy F. Lucas, y Annette Novallo. Online Database Search Services Directory: A Reference and Referral Guide to Libraries, Information Firms, and Other Sources Providing Computerized Information Retrieval and Associated Services Using Publicy Available Online Detabases. Detroit, Mich: Gale, 1984.
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Cita MLA (9a ed.)
Schmittroth, John, et al. Online Database Search Services Directory: A Reference and Referral Guide to Libraries, Information Firms, and Other Sources Providing Computerized Information Retrieval and Associated Services Using Publicy Available Online Detabases. Gale, 1984.
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