Open Doors (English Wikipedia)

Darling, Daniel (March 29, 2021). "Hide It Under a Bushel? Maybe". Christianity Today. Retrieved March 30, 2021.
"The 50 Countries Where It's Hardest to Follow Jesus in 2023". News & Reporting. 17 January 2023. Retrieved 2023-01-18.

christiantoday.com

Sentinel staff (Oct 13, 2017). "Ottawa County Patriots to host event about Christian persecution". Holland Sentinel. Retrieved 2018-05-09.

"Open Doors' Global Petition Presented at United Nations - Open Doors USA". Open Doors USA. December 9, 2010. Retrieved April 20, 2018.
"Open Doors USA 2015 annual report" (PDF). Open Doors USA. Retrieved March 27, 2018.
Open Doors USA 2018 annual report. Open Doors USA website Retrieved 1 December 2019.
"World Watch List Ranking Methodology". Archived from the original on 2017-11-15.

Brodeur, Nicole (1988-10-15). "OC charity to ship first load of Bibles to Soviets by Dec. 25". Orange County Register. p. b.08. ISSN 0886-4934. ProQuest 272237755. (Registration required)
Owen, Mary (1989-12-30). "County-based ministry has sent 1 million Bibles to Christians in USSR". Orange County Register. p. E.05. ISSN 0886-4934. ProQuest 272433825. (Registration required)

Hattaway, Paul (May 8, 2007). "Brother David "God's smuggler to China" had died at 70 today". Radio Free China. Assist News Service. Retrieved April 20, 2018.

Hoyle, Russ; Wong, Bing W (1981-10-19). "Risky Rendezvous at Swatow". TIME. Archived from the original on October 15, 2010. Retrieved 2009-04-07.

Hoyle, Russ; Wong, Bing W (1981-10-19). "Risky Rendezvous at Swatow". TIME. Archived from the original on October 15, 2010. Retrieved 2009-04-07.
"World Watch List Ranking Methodology". Archived from the original on 2017-11-15.

"Local News in Brief: Santa Ana Group to Legally Ship Million Bibles to Russia". Los Angeles Times. 1988-08-06. p. 2. ISSN 0458-3035. Retrieved 2009-04-07.
Brodeur, Nicole (1988-10-15). "OC charity to ship first load of Bibles to Soviets by Dec. 25". Orange County Register. p. b.08. ISSN 0886-4934. ProQuest 272237755. (Registration required)
Owen, Mary (1989-12-30). "County-based ministry has sent 1 million Bibles to Christians in USSR". Orange County Register. p. E.05. ISSN 0886-4934. ProQuest 272433825. (Registration required)
Obituaries, Telegraph (2022-09-29). "Brother Andrew, missionary who fearlessly crossed borders to smuggle Christian literature into Communist lands – obituary". The Telegraph. ISSN 0307-1235. Retrieved 2023-01-18.