APA citiranje
(1974). PSI: Personalized system of instruction 41 Germinal papers. W. A. Benjamin,Inc..
Chicago Style (17th ed.) Citation
PSI: Personalized System of Instruction 41 Germinal Papers. Reading,MA.: W. A. Benjamin,Inc., 1974.
MLA citiranje
PSI: Personalized System of Instruction 41 Germinal Papers. W. A. Benjamin,Inc., 1974.
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