Kahn, James R.
Thomson, 2005
Buku Teks
edited by Jay Krishna Thakur ... [and others]
Springer, 2011
eBooks
Herbert H. P. Fang, Tong Zhang
Imperial College Press, 2015
Buku Teks
Freeman, A. Myrick, 1936-
Resources for the Future, 1993
Buku Teks SO
Hackett, Steven C.
M.E. Sharpe, 2001
Buku Teks SO