Ulrichs Web Global Serials Directory (USA) RePEc (Germany) IDEAS Turkish Education Index INFOBASEINDEX Crossref DOI Scilit (Switzerland) ADVANCE SCIENCE INDEX Scientific World Index Econ Papers ACADEMIA Directory of Open Access Scholarly Resourse Citefactor Google Scholar Global Impact Factor Scientific Indexing Services (SIS) Citeulike SocioRePEc Directory of Research Journals Indexing (DRJI) INTERNATIONAL INSTITUTE OF ORGANIZED RESEARCH Academic Resource Index Base Universitätsbibliothek Bielefeld SHERPA/RoMEO J-Gate SOCIONET PERSONAL ZONE AcademicKeys Polska Bibliografia Naukowa Journals Impact Factor (JIF) Genamics JournalSeek SJIF (Scientific Journal Impact Factor) IP Indexing

Discontinued in Scopus  - Coverage Range 2015 to March 2019