edited by M. David Ermann and Richard J. Lundman
Oxford University Press, 1978
Buku Teks
edited by Irving Lewis Allen
National University Publicatons, 1977
Buku Teks
McDonald, William F., author
Sage, 1979
Buku Teks
edited by John P. Blair, David Nachmias
Sage, 1979
Buku Teks
Hill, John W., author
Prentice-Hall, 1975
Buku Teks