Citace podle APA (7th ed.)
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.
Citace podle Chicago (17th ed.)
Schmittroth, John, Doris Morris Maxfield, Amy F. Lucas, a 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.
Citace podle MLA (9th 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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