Lakušić, Dmitar, Marjan Niketić, Tamara Rakić, and Vladimir Stevanović. 2013. “Edraianthus canescens (Campanulaceae), a New Species from the Central Balkan Peninsula”. Phytotaxa 118 (1). Auckland, New Zealand:22–28. https://doi.org/10.11646/phytotaxa.118.1.3.