John Muir Institute for Environmental Studies. Environmental Ethics, Volume 1, Number 1, Spring 1979. Albuquerque, New Mexico. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc233305/. Accessed April 21, 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.