Payne, James L., author
Lytton, 1975
Buku Teks
Blalock, Hubert M., author
Sage Publications, 1982
Buku Teks
Rothman, Jack, author
Columbia University Press, 1974
Buku Teks
Campbell, Donald T., author
Sage, 2001
Buku Teks
Armstrong, Bruce K., author
Oxford University Press, 1994
Buku Teks