참고문헌
- 노동신문(2020.1.22.)
- 자연과학 - 초급중학교 2 (교육도서출판사, 2014)
- 지리 - 고급중학교 2 (교육도서출판사, 2014)
- 물리 - 고급중학교 2 (교육도서출판사, 2014)
- 북한학보(사단법인 북한연구소, 46집 2호, 2021)
- 우리나라의 자연보호지역(2005)
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