"'Mummy porn' Fifty Shades Of Grey outstrips Harry Potter to become fastest selling paperback of all time".
بازبینی‌شده در ۱ سپتامبر ۲۰۱۲.  «'Mummy porn' Fifty Shades Of Grey outstrips Harry Potter to become fastest selling paperback of all time» ‎(انگلیسی)‎.