Parker Michael E. (2008). Who Said So? The Questions Revolutionary Businesses Ask That Make Them Successful. JohnWiley &Sons,Inc.,Hoboken.
Chicago-referens (17:e uppl.)Parker Michael E. Who Said So? The Questions Revolutionary Businesses Ask That Make Them Successful. New Jersey: JohnWiley &Sons,Inc.,Hoboken, 2008.
MLA-referens (9:e uppl.)Parker Michael E. Who Said So? The Questions Revolutionary Businesses Ask That Make Them Successful. JohnWiley &Sons,Inc.,Hoboken, 2008.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.