Internet - http://www.xs4all.nl/ēmbden11/Engels/palmer.htm (2004-02-23)
L'énigme du persan gris / Stuart Palmer, 2004
LC authorities - http://authorities.loc.gov (2004-02-23)
Wisconsin library association - http://www.wla.lib.wi.us/lac/notable/1998notable.htm#Stuart
(2004-02-23)