1. Scientology: To Be Perfectly Clear
2. Degrees of truth: Sequoia University and Doctor L. Ron Hubbard, PhD, D. Scn, D.D;Camacho I. C.;The Journal of CESNUR,2019
3. The world's first clear presentation: When Hubbard met Sonya Bianchi at the Shrine Auditorium;Camacho I. C.;The Journal of CESNUR,2019
4. CCHR. (n.d.).What is the citizens commission on human rights?Retrieved fromhttps://www.cchr.org/about-us/what-is-cchr.html