8,011 Siti Sarah Binti Mohd Sinin 2018-12-14 http://www.bf.uni-lj.si/fileadmin/groups/2716/downloads/Literatura_drevesne_vrste/breza_skandinavija.pdf Hynynen, J., Niemisto, P., Vihera-Aarnio, A., Brunner, A., Hein, S., & Velling, P. (2009). Silviculture of birch (Betula pendula Roth and Betula pubescens Ehrh.) in northern Europe. Forestry, 83(1), 103-119.