Blalock, Hubert M.
Sage Publications, 1982
Buku Teks
Rothman, Jack
Columbia University Press, 1974
Buku Teks
Campbell, Donald T.
Sage, 2001
Buku Teks
Armstrong, Bruce K.
Oxford University Press, 1994
Buku Teks
Morris, Alan S.
Elsevier, 2006
Buku Teks