| Britannica Nobel Prize: Curium: Overview and basic data. |
| ChemGlobe: Curium: Electronic, thermal, and steric data along with an isotope table. |
| ChemicalElements.com: Curium: Basic information, atomic structure, and isotopes. |
| Curium: History and properties of the element, its isotopes, its spectrum, and its substances. |
| Curium: Data tables and historic information. |
| EnvironmentalChemistry.com: Curium: Atomic structure, chemical and physical properties, and table of nuclides. |
| It's Elemental: Curium: Basic physical and historical information. |
| LANL: Curium: Basic information and history. |
| Lenntech: Curium: Physical data, chemical properties, health and environmental effects. |
| Visual Elements: Curium: General and physical information, source, and key isotopes. |
| WebElements: Curium: Extensive information on history, compounds, and properties. |