Aslib. Information Industry Group & Raffin, M. R. (1978). The Marketing of information services: Proceedings of a seminar held by the Aslib Information Industry Group on 11 May 1977. Aslib.
Citace podle Chicago (17th ed.)Aslib. Information Industry Group a Margaret R. Raffin. The Marketing of Information Services: Proceedings of a Seminar Held by the Aslib Information Industry Group on 11 May 1977. London: Aslib, 1978.
Citace podle MLA (9th ed.)Aslib. Information Industry Group a Margaret R. Raffin. The Marketing of Information Services: Proceedings of a Seminar Held by the Aslib Information Industry Group on 11 May 1977. Aslib, 1978.
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