LITTLEFIELD, G. L. (1974). Office And Administrative Management System Analysis, Data Prosesing, And Office Service G. L. Littlefield, Frank M. Rachel, Donald L. Garuth. Prentice-Hall of India Private.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLITTLEFIELD, G. L. Office And Administrative Management System Analysis, Data Prosesing, And Office Service G. L. Littlefield, Frank M. Rachel, Donald L. Garuth. Prentice-Hall of India Private, 1974.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLITTLEFIELD, G. L. Office And Administrative Management System Analysis, Data Prosesing, And Office Service G. L. Littlefield, Frank M. Rachel, Donald L. Garuth. Prentice-Hall of India Private, 1974.
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