Kelley, K. K. Contributions to the Data on Theoretical Metallurgy: [Part] 7. The Thermodynamic Properties of Sulphur and its Inorganic Compounds. Washington D.C.. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc66396/. Accessed October 20, 2016.
Note: Inconsistencies in capitalization and punctuation within the Digital Library may affect this citation. Before using this citation in formal writing, please consult your preferred style manual. More information.