Machiel Lamers & Edward Huijbens. (2018). Sustainable Tourism and Natural Resource Conservation in the Polar Regions. MDPI - Multidisciplinary Digital Publishing Institute.
Chicago-čujuhus (17. p.)Machiel Lamers juo Edward Huijbens. Sustainable Tourism and Natural Resource Conservation in the Polar Regions. MDPI - Multidisciplinary Digital Publishing Institute, 2018.
MLA-čujuhus (9. p.)Machiel Lamers juo Edward Huijbens. Sustainable Tourism and Natural Resource Conservation in the Polar Regions. MDPI - Multidisciplinary Digital Publishing Institute, 2018.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.