Central & Eastern European Academic Source (CEEAS)
https://www.ebsco.com/m/ee/Marketing/titleLists/e5h-coverage.htm
Open Academic Journals Index OAJI
Directory of Research Journals Indexing
Research Bible
EuroPub Database
Germany National Library
ABL Universitat Bibliothek Leipzig
Türk Eğitim İndeksi
SOBIAD
German Union Catalogue of Serials (ZDB)
Wissenschaftzentrum Berlin für Sozialforschung WZB
Cornell University Library
İSAM
ScienceGate
researchgate
ADVANCED SCIENCES INDEX (ASI)
Eurasian Scientific Journal Index