Abrami, Philip C., author
Allyn and Bacon, 2001
Buku Teks
Parsons, Robert, author
Harper & Row, 1974
Buku Teks
Barnes, J. Wesley, author
McGraw-Hill, 1994
Buku Teks
Flora, David B., author
Sage, 2018
Buku Teks
Jain, Surender Kumar, author
Thomson Brooks/Cole, 2004
Buku Teks