str.org, Greg Koukl
reasonablefaith.org, William Lane Craig
crossexamined.org, Frank Turek
josh.org, Josh McDowell
leestrobel.com, Lee Strobel
carm.org, Matt Slick
equip.org, Christian Research Institute
rzim.org, Ravi Zacharias
johnlennox.org, John Lennox
garyhabermas.com, Dr. Gary Habermas
jpmoreland.com, J.P. Moreland
stephencmeyer.org, Stephen C. Meyer
coldcasechristianity, J. Warner Wallace