edited by R.J. Cashmore
World Scientific, 1994
Buku Teks
Perkins, Dexter
Indiana University Press, 1963
Buku Teks
Perkins, Dexter
Harvard University Press, 1947
Buku Teks
Perkins,Dexter
Little, Brown and Company, 1944
Buku Teks
Perkins, Dexter
Harvard University Press, 1954
Buku Teks