Retrieved on May 3, 2012. Mansnerus, Laura. "Hugh Hefner, Who Built Playboy Empire and Embodied It, Dies at 91". The New York Times. September 27, 2017. September
haqqında jurnal ideyasını əldə etmişdir. Sayp həmin ilin iyununda "Golden Empire Publications Inc." şirkətini təsis etmiş və noyabrda "Computer Gaming World"
Tucker, THE FUTURIST Magazine, November–December 2009. The Gutenberg Galaxy, Marshall McLuhan, University of Toronto Press, 1962 Empire of Illusion, Chris
1995, ISBN 0-7146-4128-6 O'Sullivan, Christopher D. FDR and the End of Empire: The Origins of American Power in the Middle East. Palgrave Macmillan, 2012