edited by Hillol Kargupta
CRC Press, Taylor & Francis Group, 2009
Buku Teks
International Bank for Reconstruction and Development.
The World Bank, 2006
Buku Teks
edited by Tessa Hebb
Springer, 2012
eBooks
López, Ana Belen Cristobal
Springer, 2012
eBooks
Harrington, H. James
McGraw-Hill, 1995
Buku Teks