APA (7 वां संस्करण) प्रशस्ति पत्र

Harmer, J. (2007). The practice of English language teaching (4th ed.). Pearson Longman.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Harmer, Jeremy. The Practice of English Language Teaching. 4th ed. Harlow, England: Pearson Longman, 2007.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Harmer, Jeremy. The Practice of English Language Teaching. 4th ed. Pearson Longman, 2007.

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