APA (7th ed.) Citation

Kennedy, D. J., & Newcombe, J. (2004). What's wrong with same-sex marriage? Crossway Books.

Chicago Style (17th ed.) Citation

Kennedy, D. James, and Jerry Newcombe. What's Wrong with Same-sex Marriage? Wheaton, Ill.: Crossway Books, 2004.

MLA (9th ed.) Citation

Kennedy, D. James, and Jerry Newcombe. What's Wrong with Same-sex Marriage? Crossway Books, 2004.