Ramseur, Jonathan L.; Lattanzio, Richard K.; Luther, Linda; Parfomak, Paul W. & Carter, Nicole T. Oil Sands and the Keystone XL Pipeline: Background and Selected Environmental Issues. Washington D.C.. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc98034/. Accessed July 31, 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.