Thomas, Robert Murray, 1921-
Bergin & Garvey, 2000
Buku Teks SO
Thomas, Robert Murray, 1921-
Corwin Press, 2008
Buku Teks SO
Sanders, Lalage D.
BPS Blackwell, 2010
Buku Teks SO
Brink, Pamela J.
Jones and Bartlett, 1988
Buku Teks SO
Wood, Marilynn J.
Jones and Bartlett , 2011
Buku Teks SO