APA (7 वां संस्करण) प्रशस्ति पत्र
Heald, T. (1983). Networks: Who we know and how we use them. Hodder and Stoughton.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Heald, Tim. Networks: Who We Know and How We Use Them. London: Hodder and Stoughton, 1983.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Heald, Tim. Networks: Who We Know and How We Use Them. Hodder and Stoughton, 1983.
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