Leslie, L. A., Rader, C., & Zoubek, C. E. (1971). Workbook for Gregg shorthand, including functional method (2nd ed.). McGraw-Hill Book Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLeslie, Louis A., Charles Rader, और Charles E. Zoubek. Workbook for Gregg Shorthand, Including Functional Method. 2nd ed. New York: McGraw-Hill Book Company, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLeslie, Louis A., et al. Workbook for Gregg Shorthand, Including Functional Method. 2nd ed. McGraw-Hill Book Company, 1971.
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