Não informado. (2020). Work Study and Management. Institute of Work Study.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Work Study and Management. London: Institute of Work Study, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Work Study and Management. Institute of Work Study, 2020.
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