Gilchrist, R. S. (1974). Curriculum Development: A humanized systems approach. Phi Delta Kappa.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGilchrist, Robert S. Curriculum Development: A Humanized Systems Approach. USA: Phi Delta Kappa, 1974.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGilchrist, Robert S. Curriculum Development: A Humanized Systems Approach. Phi Delta Kappa, 1974.
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