APA

Korea National Park Service, . (2011). Top 100 natural wonders of korean national parks. Seúl, Corea del Sur: Korea National Park Service.

Chicago

Korea National Park Service, . 2011. Top 100 natural wonders of korean national parks. Seúl, Corea del Sur: Korea National Park Service.

Harvard

Korea National Park Service, . (2011). Top 100 natural wonders of korean national parks. Seúl, Corea del Sur: Korea National Park Service.

MLA

Korea National Park Service, . Top 100 natural wonders of korean national parks. Seúl, Corea del Sur: Korea National Park Service. 2011.