Greg Brooks. Dictionary of the British English Spelling System. Open Book Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGreg Brooks. Dictionary of the British English Spelling System. Open Book Publishers.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGreg Brooks. Dictionary of the British English Spelling System. Open Book Publishers.
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