Fox, Annette Baker, 1912-, author
The University of Chicago Press , 1959
Buku Teks
Cattell, David T.
University of California Press, 1957
Buku Teks
Berridge, G. R, author
Berridge, 2005
Buku Teks
Roy, S. L. (Somendra Lal), 1929-
Rajawali, 1991
Buku Teks
Westeriew Press, 1991
Buku Teks