DÖLARSLAN, M., and E. GÜL. “Çankırı-Yapraklı Hazım Dağlı Tabiat Parkı’nın Doğal Süs Bitkileri Ve Toprak Özellikleri”. International Journal of Agricultural and Natural Sciences, vol. 5, no. 2, July 2019, pp. 76-80, https://ijans.org/index.php/ijans/article/view/206.