Harary, F. (1973). New directions in the theory of graphs. Academic Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarary, Frank. New Directions in the Theory of Graphs. Nueva York: Academic Press, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHarary, Frank. New Directions in the Theory of Graphs. Academic Press, 1973.
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