These are some readings that could be used in a course on religion and marketing
Textbooks
Mann, Alice (1998) The In-Between Church: Navigating Size Transitions in Congregations, ALban Institute: Herndon, VA, ISBN 1566992079 [Publisher's Site].
Atkin, Douglas (2004), The Culting of Brands, Portfolio/Penguin, ISBN 159184096 [Author's Site].
Other Books of Interest
Miller, Vincent J. (2003), Consuming Religion: Christian Faith and Practice in a Consumer Culture, Continuum [Journal of Marketing Book Review].