Barkley, N. (1995). The Crystal - Barkley guide to taking charge of your Career. Workman.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarkley, Nella. The Crystal - Barkley Guide to Taking Charge of Your Career. New york: Workman, 1995.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBarkley, Nella. The Crystal - Barkley Guide to Taking Charge of Your Career. Workman, 1995.
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