Redfiel, Robert
The University of Chicago Press, 1950
Buku Teks
Redfield, Robert, author
Chicago The University of Chicago Press 1950,
Buku Teks
Smith, Arthur H., author
Fleming H. Revell, 1899
Buku Teks
Quain, Buell, author
University of Chicago Press, 1948
Buku Teks
Myrdal, Jan, author
Pantheon Books, 1965
Buku Teks