Pettigrew, A. (1987). Theoretical, Methodological and Empirical Issues in Studying Change.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPettigrew, A. Theoretical, Methodological and Empirical Issues in Studying Change. 1987.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPettigrew, A. Theoretical, Methodological and Empirical Issues in Studying Change. 1987.
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