Coal, oil, 1977, undated
MLA
Ross, M. H.. "Coal, oil, 1977, undated." Georgia State University. Special Collections. 1977, http://digitalcollections.library.gsu.edu/cdm/ref/collection/mhross/id/42012.
APA
Ross, M. H. (1977). Coal, oil, 1977, undated. Retrieved from http://digitalcollections.library.gsu.edu/cdm/ref/collection/mhross/id/42012
Chicago
Ross, M. H.. "Coal, oil, 1977, undated." 1977. July 25, 2025. http://digitalcollections.library.gsu.edu/cdm/ref/collection/mhross/id/42012.
