Donatism. Online Dynamic Bibliography

https://www.zotero.org/groups/donatism

Eastern Miscellany CNKI

http://cpem.cp.com.cn/

Encyclopaedia of Islam

https://referenceworks.brillonline.com/cluster/Encyclopaedia%20of%20Islam

ERIC

http://eric.ed.gov/

Film & Television Literature Index with Full Text

https://research.ebsco.com/c/zgycs2/search/?db=f3h

Historical Abstracts with Full Text

https://research.ebsco.com/c/zgycs2/search/?db=30h

Humanities Source Ultimate

https://research.ebsco.com/c/zgycs2/search/advanced/filters?db=hsi

Incunabula Short Title Catalogue

http://www.bl.uk/catalogues/istc/

Index Islamicus

https://bibliographies.brillonline.com/browse/index-islamicus

Indo-European Etymological Dictionaries Online

https://dictionaries.brillonline.com/iedo