Marx, G. (1984). Games nature plays: A reprint collection of essays about science education (Prelim. ed.). Unesco ; Orszagos Oktatastechnikai Kozpont.
Čikaški stil citiranja (17. izdanje)Marx, Gyorgy. Games Nature Plays: A Reprint Collection of Essays About Science Education. Prelim. ed. [Budapest?]: Unesco ; Orszagos Oktatastechnikai Kozpont, 1984.
MLA način citiranja (9. izdanje)Marx, Gyorgy. Games Nature Plays: A Reprint Collection of Essays About Science Education. Prelim. ed. Unesco ; Orszagos Oktatastechnikai Kozpont, 1984.
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