https://villonfilms.ca/archive/search?archive%5Bquery%5D=Leon+redler
https://villonfilms.ca/archive/search?archive%5Bquery%5D=Leon+redler
https://newobs.files.wordpress.com/2013/12/redler1.pdf
http://janushead.org/wp-content/uploads/2020/07/Leon-Redler-Steven-Gans-and-Bob-Mullan.pdf
https://www.amazon.com/-/zh_TW/Steven-Gans/dp/0738899178
https://www.yumpu.com/en/document/view/20097583/therapy-with-leon-redler-a-story-of-disillusionment