Shatkin, L. (1980). Computer-assisted guidance: Descriptions of systems. Educational Testing Service.
Citace podle Chicago (17th ed.)Shatkin, Laurence. Computer-assisted Guidance: Descriptions of Systems. Princeton, New Jersey: Educational Testing Service, 1980.
Citace podle MLA (9th ed.)Shatkin, Laurence. Computer-assisted Guidance: Descriptions of Systems. Educational Testing Service, 1980.
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