APA (7th ed.) Citation

Ashton, J. (2000). In six days: Why fifty scientists choose to believe in creation. Master Books.

Chicago Style (17th ed.) Citation

Ashton, John. In Six Days: Why Fifty Scientists Choose to Believe in Creation. Green Forest, AR: Master Books, 2000.

MLA (9th ed.) Citation

Ashton, John. In Six Days: Why Fifty Scientists Choose to Believe in Creation. Master Books, 2000.