Lipset, Seymour Martin, author
Basic Books, 1963
Buku Teks
edited by E. Bradford Burns
Prentice-Hall, 1993
Buku Teks
McNickle, D`Arcy, author
J.B. Lippincott, 1949
Buku Teks
Martens, Stephanie B., author
Palgrave Macmillan, 2016
Buku Teks
Lamb, Harold, author
Doubleday, 1955
Buku Teks