Defining Religion/Religious Studies
Online - The issue of how to define "religion" is controversial. The following are some links that address the question:
Russell T. McCutcheon, "Religion," [forthcoming in the New Dictionary of the History of Ideas. Maryanne Cline Horowitz (ed.in chief, New York: Charles Scribner’s Sons, 2004] at http://www.as.ua.edu/rel/pdf/rel237definitionofreligion.pdf
Studying Religion Website at http://www.as.ua.edu/rel/studyingreligion.html
"Definition of Religion" - Encyclopedia of Religion and Society at http://hirr.hartsem.edu/ency/defreligion.htm
American Academy of Religion - introduction to the study of religion website at http://www.studyreligion.org/start/index.html
Offline
Asad, Tal, 1993. Genealogies of Religion: Discipline and Reasons of Power in Christianity and Islam. Baltimore: Johns Hopkins University Press.
Jonathan Z. Smith, "Religion, Religions, Religious," in Critical Terms for Religious Studies. ed. Mark C. Taylor. (Chicago: University of Chicago Press, 1998), pp. 269-84. ISBN: 0226791572
Jan G. Platvoet and Arie L. Molendijk, ed. The Pragmatics of Defining Religion. Numen Book Series, 84. Leiden: Brill, 1999. ISBN 90 04 11544 7
Tim Murphy, ed. Defining Religion: A Reader. Equinox, 2006. Paperback ISBN1845530306 View Table of Contents at http://www.equinoxpub.com/books/showbook.asp?bkid=92
Arthur L. Greil, and David Bromley, eds. Defining Religion: Investigating the Boundaries Between the Sacred and Secular. Hardbound, ISBN: 0-7623-0976-8, Elsevier, 2003. Table of Contents at Elsevier.com - Defining Religion, 10
Daniel L. Pals, Eight Theories of Religion (Hardcover) Oxford University Press; 2 edition (December 30, 2005)ISBN: 0195304586; earlier edition Seven Theories of Religion
Ivan Strenski, Thinking about Religion: An Historical Introduction to Theories of Religion. Blackwell Publishing, 2006. ISBN1-4051-2012-6