1993. p. 40. Retrieved January 20, 2021. She had it on very good authority that her e-book , Sex , marketed eighty , 000 in the very first 50 percent an hour in London. Eben, Shapiro (October 20, 1992). "The Media Business Edging Into Madonna's Limelight". Robinson, John (October 22, 1992). "Madonna's 'Sex' sells out in Santa Cruz". Blankenship, Mark (October 22, 2012). "My Weird Journey With Madonna's 'Sex' Book". Elan, Priya (April 25, 2012).