"A future vision and policy of OPEC: a future of the oil industry and the oil policy of OPEC" by Professor Z. Mikdashi, Box: 17, Folder: 9. Charles Heller papers, RH MS 314. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/490353 Accessed April 19, 2024.