Indexing and Abstracting

1. DOAJ (Directory of Open Access Journals)
2. Google Scholar
3. Academia.Edu
4. Portal Garuda
5. Moraref
6. Crossref
7. BASE (Bielefeld Academic Search Engine)
8. SINTA (Science and Technology Index)
9. Dimensions
10. WorldCat
11. ROAD
12. Universiteit Leiden Catalogue