Campbell, R. M. (2002). The politics of postal transformation: Modernizing postal systems in the electronic and global world. McGill-Queen's University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCampbell, Robert Malcolm. The Politics of Postal Transformation: Modernizing Postal Systems in the Electronic and Global World. Montreal: McGill-Queen's University Press, 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCampbell, Robert Malcolm. The Politics of Postal Transformation: Modernizing Postal Systems in the Electronic and Global World. McGill-Queen's University Press, 2002.
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