APA (7 वां संस्करण) प्रशस्ति पत्र
Henkin, D. M. (2006). The postal age: The emergence of modern communications in nineteenth-century America. University Of Chicago Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Henkin, David M. The Postal Age: The Emergence of Modern Communications in Nineteenth-century America. Chicago: University Of Chicago Press, 2006.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Henkin, David M. The Postal Age: The Emergence of Modern Communications in Nineteenth-century America. University Of Chicago Press, 2006.
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