Drgoňa, V. (1993). Geographical studies. Vol. 2. Enviromental problems in central Europe. Experiences from Slovakia and Austria ([1st ed.].). University of Education.
Citácia podle Chicago (17th ed.)Drgoňa, Vladimír. Geographical Studies. Vol. 2. Enviromental Problems in Central Europe. Experiences from Slovakia and Austria. [1st ed.]. Nitra: University of Education, 1993.
Citácia podľa MLA (8th ed.)Drgoňa, Vladimír. Geographical Studies. Vol. 2. Enviromental Problems in Central Europe. Experiences from Slovakia and Austria. [1st ed.]. University of Education, 1993.
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