Não informado. (2001). American Paper Industry. Paper Industry Management Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. American Paper Industry. Chicago, Ill: Paper Industry Management Association, 2001.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. American Paper Industry. Paper Industry Management Association, 2001.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.