editor, Kenneth F. Kiple ; executive editor, Rachael Rockwell Graham ; associate editors, David Frey [and others] ; assistant editors, Alicia Browne [and others]

Cambridge University Press, 1995

 Buku Referensi

Pol, Louis G.

Plenum Press, 1992

 Buku Teks

Academic Press, 1980

 Buku Teks

Edited by Kevin McConway and Basiro Davey

Open UNiversity Press, 2003

 Buku Teks

edited by Basiro Davey, Alastair Gray, Clive Seale

Open University Press, 2001

 Buku Teks