This study of the lichen flora of Sakarya Province determined 159 species, which are listed along with their substrata.
ÇİÇEK, Arzu and TÜRK, Ayşen ÖZDEMİR (1998) "Lichen Flora of Sakarya Province (Turkey)," Turkish Journal of Botany: Vol. 22: No. 2, Article 6. Available at: https://journals.tubitak.gov.tr/botany/vol22/iss2/6