Chwil, Paulina, Karol Terlecki, Jan Sobstyl, Paulina Sobstyl, Lidia Kotuła, & Janusz Kocki. " Crataegus monogyna Jacq. and C. oxyacantha L. Medical applications of quercetin."
Modern Phytomorphology
[Online], 6 (2014): 117. Web. 12 Apr. 2018