Kallaus, N. F. (1992). Administrative office management (Abridged 10th ed.). South Western.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKallaus, Norman Francis. Administrative Office Management. Abridged 10th ed. Cincinnati, Ohio: South Western, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKallaus, Norman Francis. Administrative Office Management. Abridged 10th ed. South Western, 1992.
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