Não informado. (1975). Paper Technology and Industry. British Paper and Board Industry Federation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Paper Technology and Industry. London: British Paper and Board Industry Federation, 1975.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Paper Technology and Industry. British Paper and Board Industry Federation, 1975.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.