Não informado. (2012). Yearbook. Technical Association of the Pulp and Paper Industry.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Yearbook. New York: Technical Association of the Pulp and Paper Industry, 2012.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Yearbook. Technical Association of the Pulp and Paper Industry, 2012.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.