The emphasis in this Guide is on Christian Theology, and more specifically on Catholic Theology, although a number of the works cited provide an ecumenical perspective. The Guide is meant to help identify materials for basic and advanced research in theology.
Theology section: pp. 57-138. Sections include Apologetics, Dogmatic, Theology, Moral Theology, Pastoral Theology, Ascetical & Mystical Theology, Ecumenism, and Liturgy. Entries are annotated.
Starkey, Edward D. Judaism and Christianity: A Guide to the Reference Literature. Englewood, CO: Libraries Unlimited, 1991. (O'Neill Reference BM45 .S78 1991)
Entries are annotated. In addition to the standard types of references (handbooks, atlases, dictionaries, etc.), it also lists core journals, research centers, institutes, scholarly and professional organizations, and library associations. Part 1 covers both traditions in general; Part 2 covers the bibles of Judaism and Christianity.
Stewart, David R.: The Literature of Theology : A Guide for Students and Pastors. Louisville, KY: Westminster John Knox Press, 2003. (O'Neill Reference BR118 .S73 2003)
This updated reference guide directs students to over 500 significant theological resources across a wide area of theological research. It details bibliographic sources for encyclopedias, dictionaries, and electronic resources in biblical studies, historical studies, theology, and practical theology.
An excellent web site presenting resources organized by subject (Archaeology & Classics, Biblical Studies, Christianity, Religion, World Religions) and resource type (e-texts, e-journals, syllabi, etc.).