Naylor H. Helen & Murphy R. Raymond. (1996). Essential Grammar in Use Supplementary Exercises: With answers. Cambridge, Cambridge University Press, 1996.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNaylor H. Helen और Murphy R. Raymond. Essential Grammar in Use Supplementary Exercises: With Answers. Cambridge, Cambridge University Press, 1996, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNaylor H. Helen और Murphy R. Raymond. Essential Grammar in Use Supplementary Exercises: With Answers. Cambridge, Cambridge University Press, 1996, 1996.
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