Gokturk, R. S., O. Dusen, E. Kaya, B. Gurcan, and U. Sarpkaya. “A New Variety of Plocama Calabrica (Rubiaceae) from Denizli (Turkey) Confirmed by Morphological and Molecular ISSR Markers”. Acta Botanica Croatica, vol. 78, no. 2, Oct. 2019, https://www.abc.botanic.hr/index.php/abc/article/view/2427.