Holbrook, J. Britt & Briggle, Adam. Knowing and acting: The precautionary and proactionary principles in relation to policy making. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc157308/. Accessed December 20, 2013.
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.