Asher, Herbert B., author
Sage Publications, 1983
Buku Teks
Setyo Hari Wijanto, author
Graha Ilmu, 2008
Buku Teks
Little, Todd D, author
The Guilford Press, 2013
Buku Teks
Blalock, Hubert M., author
W.W. Norton, 1964
Buku Teks
Elsevier, 2004
Buku Teks