Conant, James B.
Yale University Press, 1964
Buku Teks
Robinson, James T.
Wadsworth, 1968
Buku Teks
Hongming, Ma
Sense, 2012
eBooks
Ireson, Gren, author
Learning Matters, 2006
Buku Teks
edited by John Sears and Pete Sorensen
Routledge Falmer, 2000
Buku Teks