1. Crossref
2. Google Scholar
3. Moraref
4. Road
5. Mendeley
6. Garuda Ristekdikti
7. Dimensions
8. Base
9. One Search
10. Scilit
1. Crossref
2. Google Scholar
3. Moraref
4. Road
5. Mendeley
6. Garuda Ristekdikti
7. Dimensions
8. Base
9. One Search
10. Scilit