APA (7th ed.) Citation

Koukl, G. (2010). Why It Matters. Is God just a human invention?, 30-31.

Chicago Style (17th ed.) Citation

Koukl, Gregory. "Why It Matters." Is God Just a Human Invention? 2010: 30-31.

MLA (9th ed.) Citation

Koukl, Gregory. "Why It Matters." Is God Just a Human Invention?, 2010, pp. 30-31.

Warning: These citations may not always be 100% accurate.