Hopfner, J. in Protner, E. (ur.) (2009) Education from the Past to the Present: Pedagogical and Didactic Lessons from the History of Education. Univerzitetna založba Univerze v Mariboru (ZORA). Dostopno na: https://old.press.um.si/index.php/ump/catalog/book/85 (Pridobljeno: 1 marec 2026).