Não informado. (2001). American Paper Industry. Paper Industry Management Association.
Chicago-referens (17:e uppl.)Não informado. American Paper Industry. Chicago, Ill: Paper Industry Management Association, 2001.
MLA-referens (8:e uppl.)Não informado. American Paper Industry. Paper Industry Management Association, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.