Geotour & Štrba, Ľ. (2015). Geotour 2015: International conference on Geotourism, Mining Tourism, Sustainable Development and Environmental Protection : book of abstracts : October 15-17, 2015 : Podbanské, Slovakia. Technical University.
Citácia podľa Chicago (17th ed.)Geotour a Ľubomír Štrba. Geotour 2015: International Conference on Geotourism, Mining Tourism, Sustainable Development and Environmental Protection : Book of Abstracts : October 15-17, 2015 : Podbanské, Slovakia. Košice: Technical University, 2015.
Citácia podľa MLA (8th ed.)Geotour a Ľubomír Štrba. Geotour 2015: International Conference on Geotourism, Mining Tourism, Sustainable Development and Environmental Protection : Book of Abstracts : October 15-17, 2015 : Podbanské, Slovakia. Technical University, 2015.
