| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| reliable sources for history research | 0.48 | 0.9 | 2449 | 88 |
| credible sources for history research | 0.66 | 0.1 | 163 | 99 |
| good sources for history research | 0.56 | 0.8 | 4502 | 78 |
| best sources for history research | 0.05 | 0.6 | 4463 | 37 |
| good sources for history research paper | 0.78 | 0.5 | 4725 | 83 |
| reliable sources for research | 0.9 | 0.7 | 5522 | 58 |
| credible sources for history | 0.25 | 0.7 | 8925 | 31 |
| list of reliable sources for research papers | 1.11 | 0.3 | 1865 | 94 |
| sources of historical research | 1.44 | 0.5 | 414 | 80 |
| is about history a reliable source | 1.68 | 0.4 | 1992 | 67 |
| reliable sources for research papers | 0.05 | 0.9 | 8923 | 62 |
| reliable websites for history research | 0.41 | 0.9 | 1484 | 79 |
| how to find reliable sources for research | 0.94 | 0.2 | 2158 | 59 |
| best sources for history | 0.06 | 0.1 | 9666 | 44 |
| reliability of historical sources | 1.23 | 0.4 | 6175 | 90 |
| good sources for historical information | 1.43 | 0.6 | 1273 | 47 |
