Çölgeçen, Hatice, Ayse Kaplan, and H Nurhan Büyükkartal. 2010. “Calcium Oxalate Crystals in Leaves of Quercus Cerris L. and Q. Ilex L”. Bangladesh Journal of Botany 38 (1):103-5. https://doi.org/10.3329/bjb.v38i1.5131.