- ChemGlobe: Hassium - Electronic data along with general information and facts.
- ChemicalElements.com: Hassium - Basic information, diagram of atomic structure, and facts.
- Chemistry of Hassium, Element 108 - Article regarding a study conducted at the Berkeley National Laboratory.
- EnvironmentalChemistry.com: Hassium - Atomic structure and table of nuclides.
- It's Elemental: Hassium - Basic physical and historical information.
- LANL: Hassium - Basic information and history.
- Lenntech: Hassium - Basic data.
- Visual Elements: Hassium - General and physical information, and key isotopes.
- Wikipedia: Hassium - Basic physical and historical information.
