Laird, C. G., & Gorrell, R. M. (1961). English as language: Backgrounds, development, usage. Harcourt.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLaird, Charlton Grant, और Robert M. Gorrell. English as Language: Backgrounds, Development, Usage. New York: Harcourt, 1961.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLaird, Charlton Grant, और Robert M. Gorrell. English as Language: Backgrounds, Development, Usage. Harcourt, 1961.
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