APP (2009) Growing A Sustainable Future-2007 Environmental and Social Sustainability Report for Indonesia, p21。
APP (2009) Growing A Sustainable Future-2007 Environmental and Social Sustainability Report for Indonesia,其中IKPP声明有8%的原料来自热带杂木浆(p44) ,Lontar Papyrus声明有58%来自热带杂木浆(p31) 。按各自产量为1842755吨和674081吨计算加权平均值。