APA (7 वां संस्करण) प्रशस्ति पत्र
Ritson, C. (1977). Agricultural economics: Principles and policy. St. Martin's Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Ritson, Christopher. Agricultural Economics: Principles and Policy. New York: St. Martin's Press, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Ritson, Christopher. Agricultural Economics: Principles and Policy. St. Martin's Press, 1977.
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