Cambridge University Press, 2019
eBooks
Sengupta, Ramprasad
Boston Institute for economic development of the Boston University 1996,
Buku Teks
edited by Tim O`Riordan and Jill Jager
Routledge, 1996
Buku Teks
edited by Rob White
Springer, 2012
eBooks
N.Y. McGraw-Hill, 1976
Buku Teks