Review: Change Begins Within. The Hollywood Reporter. 5 April 2009 [2009-06-23]. (原始内容存档于2009-04-09). Amazing Ringo 70th Birthday show – McCartney, Yoko
542-92-7 in the GESTIS Substance Database from the IFA(英语:Institute for Occupational Safety and Health). Hönicke, Dieter; Födisch, Ringo; Claus, Peter;