Keeling, B. L., Burnham, K., Kallaus, N. F., & Ruprecht, M. M. (1996). Administrative office management (11th ed.). South-Western Educational Pub.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKeeling, Billy Lewis, Kent Burnham, Norman Francis Kallaus, और Mary M. Ruprecht. Administrative Office Management. 11th ed. [Cincinnati, Ohio]: South-Western Educational Pub, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKeeling, Billy Lewis, et al. Administrative Office Management. 11th ed. South-Western Educational Pub, 1996.
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