1) WLC's Version - Common Misunderstandings
Recommended reading on the moral argument:
William Lane Craig, Reasonable Faith: Christian Truth and Apologetics, 3rd ed. Wheaton, IL: Crossway Books, 2008.William Lane Craig. On Guard: Defending Your Faith with Reason and Precision. Colorado Springs, CO: David C. Cook, 2010.
Robert K. Garcia and Nathan L. King, editors. Is Goodness without God Good Enough? A Debate on Faith, Secularism, and Ethics. Lanham, MD: Rowman and Littlefield Publishers, Inc. 2009. See especially the chapters by Craig, Murphy, and Swinburne.
"The Moral Argument," by Mark D. Linville, in The Blackwell Companion to Natural Theology. William Lane Craig and J. P. Moreland, eds. Malden, MA: Wiley-Blackwell, 2012, pp. 391-448.
Erik J. Wielenberg. "In Defense of Non-Natural, Non-Theistic Moral Realism." Faith and Philosophy. Vol. 26, No. 1. January, 2009.Erik Wielenberg at http://godlesshaven.com/ep-4-morality-without-god-with-erik-wielenberg/ and also http://www.blogtalkradio.com. /thinkatheist/2012/07/16/episode-67-dr-erik-wielenberg-jul-15-2012.