Board of Investment Welfare, 1994
Buku Teks SO
Jung H. Han, editor
Academic Press, 2014
Buku Teks SO
Lee, Dong-sun
CRC Press, Taylor & Francis Group, 2008
Buku Teks SO
Brocker Group Ltd., 1995
Buku Teks SO
edited by Mendel Friedman
Plenum Press, 1990
Buku Teks SO