OPEN UNIVERSITY. (1980). MODELS AND DECISION MAKER. OPEN UNIVERSITY PRESS.
Čikaški stil citiranja (17. izdanje)OPEN UNIVERSITY. MODELS AND DECISION MAKER. MILTON KEYNES: OPEN UNIVERSITY PRESS, 1980.
MLA način citiranja (9. izdanje)OPEN UNIVERSITY. MODELS AND DECISION MAKER. OPEN UNIVERSITY PRESS, 1980.
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