Montemayor, Jeremias U.
Rex Book Store, 1976
Buku Teks SO
World Bank, 1974
Buku Teks
edited by Gerard Caprio, Jr., Izak Atiyas, and James A. Hanson
Cambridge University Press, 1996
Buku Teks SO
Dore, R.P.
Oxford University Press, 1959
Buku Teks
Timberman, David G.
M.E. Sharpe, 1991
Buku Teks SO