Yoo, Dae-Gil (31 May 2021). "전광훈 목사 지지하는 박상학 대표" [Park Sang-hak speaks in support of pastor Jeon Kwang-hoon]. Aju Business Daily (in Korean). Archived from the original on 8 August 2022. Retrieved 8 August 2022.
Bae, Du-hun (25 October 2014). "대북전단 살포 강행 박상학은 누구? '일베' 인증사진도…" [Who is Park Sang-hak who is pushing ahead with sending leaflets to North Korea?]. Herald Business (in Korean). Archived from the original on 12 November 2014. Retrieved 8 August 2022.
Cha, Min-Ji (8 September 2020). "전광훈 재수감에 변호인 측 "헌법 유린"…박상학 대표도 가세" [Jeon Kwang-hoon Lawyer claims "constitutional violation" against Jeon Kwang-hoon's re-incarceration... Park Sang-hak also supports]. No Cut News (in Korean). Archived from the original on 8 August 2022. Retrieved 8 August 2022.
Bae, Du-hun (25 October 2014). "대북전단 살포 강행 박상학은 누구? '일베' 인증사진도…" [Who is Park Sang-hak who is pushing ahead with sending leaflets to North Korea?]. Herald Business (in Korean). Archived from the original on 12 November 2014. Retrieved 8 August 2022.
Cha, Min-Ji (8 September 2020). "전광훈 재수감에 변호인 측 "헌법 유린"…박상학 대표도 가세" [Jeon Kwang-hoon Lawyer claims "constitutional violation" against Jeon Kwang-hoon's re-incarceration... Park Sang-hak also supports]. No Cut News (in Korean). Archived from the original on 8 August 2022. Retrieved 8 August 2022.
Yoo, Dae-Gil (31 May 2021). "전광훈 목사 지지하는 박상학 대표" [Park Sang-hak speaks in support of pastor Jeon Kwang-hoon]. Aju Business Daily (in Korean). Archived from the original on 8 August 2022. Retrieved 8 August 2022.