Carr-Saunders, A.M.
Clarendon Press, 1933
Buku Teks
Calhoun, Craig J.
McGraw-Hill , 1994
Buku Teks
Farley, John E.
Prentice-Hall, 1992
Buku Teks SO
Giddens, Anthony
Cambridge Polity Press 1989,
Buku Teks
Nobbs, Jack
Macmillan Education, Ltd., 1989
Buku Teks SO