^Swain, Harriet (5 October 2007).
"A textbook case for writing one". The Times Higher Education Supplement. Retrieved 24 September 2017.
^
abSarraga, Jessica (20 May 1994). "Free and just states of mind -- Political Ideas and Concepts (book review)". The Times Educational Supplement; London.
^Swain, Harriet (5 October 2007).
"A textbook case for writing one". The Times Higher Education Supplement. Retrieved 24 September 2017.
^
abSarraga, Jessica (20 May 1994). "Free and just states of mind -- Political Ideas and Concepts (book review)". The Times Educational Supplement; London.