APA (7 वां संस्करण) प्रशस्ति पत्र

Hewings, M. (1993). Pronunciation tasks: A course for pre-intermediate learners. Cambridge University Press.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Hewings, Martin. Pronunciation Tasks: A Course for Pre-intermediate Learners. United Kingdom: Cambridge University Press, 1993.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Hewings, Martin. Pronunciation Tasks: A Course for Pre-intermediate Learners. Cambridge University Press, 1993.

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