IndexMachines

  1. Google Scholar
  2. Directory of Open Access Journal (DOAJ)
  3. Crossref
  4. Neliti
  5. Garuda (RistekDikti)
  6. One Search
  7. Bielefeld Academic Search Engine (BASE)
  8. SINTA (Science Technology Index)
  9. Scilit
  10. WorldCat
  11. Dimensions
  12. Directory of Research Journals Indexing (DRJI)

Library Indexing

  1. Universiteit Leiden
  2. University of Canterbury (UC)
  3. Harvard Library
  4. Georgetown University Library
  5. Boston University