Reference books, guide books and encyclopaedias offer quick access on specialised topics in theology and religion in all its facets.
A choice of theological key words are presented in a biblical, systematic and didactic manner. »Leitfaden Theologiestudium« e.g. offers a comprehensive overview on this field and the various disciplines, answers FAQ, offers advice for structuring your studies and practical tips for gaining essential knowledge and on basic literature.
The retrograde dictionary for Hebrew and Aramaic allows a reconstruction of single fragments of scrolls and inscription. »Liederkunde zum Evangelischen Gesangbuch« gives background information on the Protestant songbook in 15 volumes.
The pocket encyclopaedia for religion and theology TRT deals with 500 of the most important key words from Christianity and world religion, from theory and practice, the ecclesiastical life in short and comprehensive articles.