Não informado. (2020). Paper Industry. Paper Industry Management Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Paper Industry. Chicago, Ill: Paper Industry Management Association, 2020.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Paper Industry. Paper Industry Management Association, 2020.
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