Jones, L., & Von Baeyer, C. (1983). Functions of American English: Communication activities for the classroom : student's book. Cambridge University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJones, Leo, और C. Von Baeyer. Functions of American English: Communication Activities for the Classroom : Student's Book. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1983.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJones, Leo, और C. Von Baeyer. Functions of American English: Communication Activities for the Classroom : Student's Book. Cambridge University Press, 1983.
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