Mills, C. Wright, author
Oxford University Press, 1951
Buku Teks
Holcombe, Arthur N.
Harvard University Press, 1940
Buku Teks
Lewis, Roy
Penguin Books, 1949
Buku Teks
Klinken, Gerry van, author
Yayasan Pustaka Obor Indonesia, 2015
Buku Teks
Banks, J. A.
Routledge & Kegan Paul Limited, 1954
Buku Teks