Marshall, James L., 1940- & Marshall, Virginia R. Rediscovery of the Elements: Strontium. Indianapolis, Indiana. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc111186/. Accessed July 2, 2015.
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.