URL: https://www.whatchristianswanttoknow.com/cambrian-explosion-why-christians-need-to-know/

URL: https://www.reasonablefaith.org/writings/scholarly-writings/the-existence-of-god/god-and-the-initial-cosmological-singularity-a-reply-to-quentin-smith/

URL: https://www.reasonablefaith.org/writings/scholarly-writings/the-existence-of-god/reflections-on-uncaused-beginnings/

URL: https://faithalone.org/journal-articles/why-confess-christ/

URL: https://www.reasonablefaith.org/writings/popular-writings/existence-nature-of-god/does-god-exist/