https://en.wikipedia.org/wiki/Cornelius_Plantinga

Webster Christian Reformed Church
https://www.webstercrc.com/
https://www.facebook.com/WebsterCRC/

https://worship.calvin.edu/about/staff-directory/cornelius-plantinga-jr/

https://library.calvin.edu/guide/collections/hh/about_crc_calvin/cts_presidents/cornelius_plantinga_jr