1. Armstrong, P.M. (November 6, 2011). Icons Open the Window to Heaven. National Catholic Register. https://www.ncregister.com/ news/icons-open-the-window-to-heaven-9jo3sa8t
2. Asian Social Institute. (2012). ASI: An Asian graduate school with a difference. http://www.asinet-online.org/ on July 19, 2022.
3. Bloom, W. (2004). SOULution: The holistic manifesto – How today’s spirituality changes everything. Hay House.
4. Bro. Wendel Talibong. (2021). Pagpunas sa larawan ng mga santo at pagluhod sa harap ng mga ito, biblical ba? https://www.youtube.com/watch?v=A-1RR0fOa9k
5. Catholic Church. (May 2007). Aparecida Document: Fifth General Conference of the Episcopate of Latin America and the Caribbean. Aparecida, Brazil.Catholic Church. (2000). Catechism of the catholic church. (1992). (2nd ed.). Vatican City.