APA (7 वां संस्करण) प्रशस्ति पत्र
Kperogi, F. A. (2015). Glocal English: The changing face and forms of Nigerian English in a global world. Peter Lang.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Kperogi, Farooq A. Glocal English: The Changing Face and Forms of Nigerian English in a Global World. New York: Peter Lang, 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Kperogi, Farooq A. Glocal English: The Changing Face and Forms of Nigerian English in a Global World. Peter Lang, 2015.
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