Goodman, Kenneth S.
Richard C. Owen Pub. , 1987
Buku Teks
edited with introduction and notes by Brinsley Nicholson and C.H. Herford
Ernest Benn Limited, 1948
Buku Teks
Bamborough, J.B.
Longman, 1959
Buku Teks
Jacomine Nortier
Cambridge University Press, 2015
eBooks
Hirsch, Barton J
American Psychological Association, 2005
Buku Teks