Jeffrey C. 1975: Lactuca in P. H. Davis(ed.). Flora of Turkey vol. 5: 776-782. Edinburgh at the University Press.
Jeffrey C. 1975: Mycelis in P. H. Davis (ed.). Flora of Turkey vol. 5: 784. Edinburgh at the University Press.
Kirpichnikov. M. E. 2001: Lactuca in U. L. Komarov (ed.) Flora of the URRS vol. 29: 354-373, Translated from Bishen singh Mahendra pal singh and Koeltz Scientific Books.
Matthews V. A. 1975: Cichorium in P. H. Davis(ed.). Flora of Turkey vol. 5 Edinburgh at the University Press.
Rechinger K. H. 1977: Lactuca in K. H. Rechinger (ed.) Flora Iranica No. 122: 185-196. Akad Druck-u. Verlagsantalt. Graz.