Roberts, F. /. Theories of Personality. Mc Graw Hill Education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRoberts, Feist /Feist. Theories of Personality. Mc Graw Hill Education.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRoberts, Feist /Feist. Theories of Personality. Mc Graw Hill Education.
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