Das,Bikram K. (2006). Functional grammar and spoken and written communication in English. Orient longman.
Chicago Style aipamenaDas,Bikram K. Functional Grammar and Spoken and Written Communication in English. Hydrabad: Orient longman, 2006.
MLA aipamenaDas,Bikram K. Functional Grammar and Spoken and Written Communication in English. Orient longman, 2006.
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