"북한 정성옥, 김정일 지시로 올림픽 불참" [North Korea's Jong Song-ok did not join Sydney Olympics on instructions of Kim Jong-il]. Domin Ilbo. 2001-04-21. Retrieved 2014-06-30.
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article.joins.com
"북한 정성옥 보스턴 마라톤 불참" [North Korea's Jong Song-ok will not join Boston Marathon]. JoongAng Ilbo. 2000-03-29. Retrieved 2014-06-30.