| ChemGlobe: Fermium: Electronic and thermal data along with an isotope table. |
| ChemicalElements.com: Fermium: Basic information, diagram of atomic structure, and facts. |
| EnvironmentalChemistry.com: Fermium: Atomic structure, chemical and physical properties, and table of nuclides. |
| Fermium: Data tables and historic information. |
| It's Elemental: Fermium: Basic physical and historical information. |
| LANL: Fermium: History, properties, and isotopes. |
| Lenntech: Fermium: Physical data and chemical properties. |
| Visual Elements: Fermium: Image, discovery, physical information, and ionisation energies. |
| WebElements: Fermium: Extensive information on history, compounds, and properties. |