Bushnell, D. S., & Rappaport, D. (1971). Planned change in education: A systems approach. Harcourt, Brace, Jovanovich.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBushnell, David S., और Donald Rappaport. Planned Change in Education: A Systems Approach. New York: Harcourt, Brace, Jovanovich, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBushnell, David S., और Donald Rappaport. Planned Change in Education: A Systems Approach. Harcourt, Brace, Jovanovich, 1971.
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