Blecher, Marc J.
Pinter, 1997
Buku Teks SO
Chow, Gregory C.
Harper & Row, 1985
Buku Teks SO
Lanteigne, Marc
Routledge, 2013
Buku Teks SO
edited by Jongmoo Jay Choi, Michael R. Powers, Xiaotian Tina Zhang
Emerald, 2016
eBooks
edited by Robert F. Ash, Y.Y. Kueh
Clarendon press , 1996
Buku Teks