แหล่งที่มา WikiPedia: อีเพกซ์ http://produce-x-101.mnet.com/profile/84 http://c9ent.co.kr/?c=artist&s=1&artist_id=93 http://cafe.daum.net/OfficialEPEX/oUhw/4 https://search.naver.com/search.naver?sm=mtb_pcv&w... https://web.archive.org/web/20190704140521/http://... https://isni.org/isni/0000000502998959 https://musicbrainz.org/artist/dab563b4-21b2-44be-... https://www.wikidata.org/wiki/Q107387899#identifie...
