1. Google Scholar
2. OPEN ACADEMIC JOURNAL INDEX
3. One Search Indonesia
4. Moraref
5. SINTA Ristek Dikti
6. CROSSREF
7. Academia.edu
8. Mendeley
9. Indonesian Scientific Journal Database
3. One Search Indonesia
4. Moraref
5. SINTA Ristek Dikti
6. CROSSREF
7. Academia.edu
8. Mendeley
9. Indonesian Scientific Journal Database