"Produced by the American Theological Library Association (ATLA), ATLA Religion Database with ATLASerials PLUS provides coverage extending back into the 19th century with the 1881 as the earliest date of coverage. ATLAS PLUS offers users access to a growing list of more than 450 full-text titles, including all of the full-text titles in ATLASerials (ATLAS), in many diverse areas of religion and theology, with full-text content in 16 languages from more than 30 different countries"--EBSCO website.

"The World Religion Database (WRD) contains detailed statistics on religious affiliation for every country of the world. It provides source material, including censuses and surveys, as well as best estimates for every religion to offer a definitive picture of international religious demography. It offers best estimates at multiple dates for each of the world's religions for the period 1900 to 2050. The WRD also contains a feedback mechanism so that users can leave comments on sources or methodology related to any figure reported in the WRD. In addition, the WRD will be constantly updated with new sources of data as they become available, such as estimates of religious affiliation at the province level within countries and religious freedom information for all countries. "