edited by Philip M. Hauser
Unesco, 1961
Buku Teks
edited by Werner Baer and Isaac Kerstenetzky
Richard D. Irwin, 1964
Buku Teks
National Planning Association, 1956
Buku Teks
Indecopi, 2000
Buku Teks
edited by Alexander T.J. Lennon
MIT Press, 2002
Buku Teks