Não informado. (2020). Paper Industry. Paper Industry Management Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Paper Industry. Chicago, Ill: Paper Industry Management Association, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Paper Industry. Paper Industry Management Association, 2020.
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