Ctrnactova, H. a Vasileska, M. (2004) „New Chemistry School-leaving Examination - New Method of Evaluation of Secondary-School Leavers", Chemické listy, 98(10). Dostupné z: http://www-.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/2111 (Viděno: 27 prosinec 2024).