Enthoven, Adolf J.H.
University of Texas , 1976
Buku Teks
Hanson, E. Mark, 1938-
Routledge, 2008
Buku Teks
editor, Gunter Schramm and Jeremy J. Warford
The World Bank, 1991
Buku Teks
Harbison, Frederick Harris
McGraw-Hill, 1965
Buku Teks
Porter, Lyman W.
McGraw-Hill, 1988
Buku Teks