Denzin, Norman K., author
Sage, 1991
Buku Teks
Macmillan, 1991
Buku Teks
Voltaire, 1694-1778
New York Dell 1959
Buku Teks
Sargent, Lyman Tower, author
Brooks Cole, 1990
Buku Teks
edited by Joel J. Lersier
Englewood Cliffs, N.J., Prentice-Hall
Buku Teks