Butt, D. (2000). Using functional grammar: An explorer's guide (2nd ed.). Sydney: National centre for English language teaching and research, Macquarie University.
শিকাগো স্টাইলে সাইটেশনButt, David. Using Functional Grammar: An Explorer's Guide. 2nd ed. Sydney: National centre for English language teaching and research, Macquarie University, 2000.
এমএলএ সাইটেশনButt, David. Using Functional Grammar: An Explorer's Guide. 2nd ed. Sydney: National centre for English language teaching and research, Macquarie University, 2000.
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