Parkinson, C. N. 109 Ways of getting to the top. Vision Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रParkinson, C. Northcote. 109 Ways of Getting to the Top. Vision Books.
एमएलए (9वां संस्करण) प्रशस्ति पत्रParkinson, C. Northcote. 109 Ways of Getting to the Top. Vision Books.
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