(1979). The 1979 world book year book.: The annual supplement to the world book encyclopedia (ed.). World book- childcraft international, Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रThe 1979 World Book Year Book.: The Annual Supplement to the World Book Encyclopedia. ed. Chicago: World book- childcraft international, Inc., 1979.
एमएलए (9वां संस्करण) प्रशस्ति पत्रThe 1979 World Book Year Book.: The Annual Supplement to the World Book Encyclopedia. ed. World book- childcraft international, Inc., 1979.
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