Não informado. (1967). Tesol quarterly: Teachers of english to speakers of other languages. Georgetown University, Institute of Languages and Linguistics.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Tesol Quarterly: Teachers of English to Speakers of Other Languages. Washington: Georgetown University, Institute of Languages and Linguistics, 1967.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Tesol Quarterly: Teachers of English to Speakers of Other Languages. Georgetown University, Institute of Languages and Linguistics, 1967.
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