Morton, Kathryn
Trade and developing countries / Kathryn Morton and Peter Tulloch
The English Language Book Society, 1978
 Buku Teks
Group techniques / Gerald Corey ...[et al.].
Brooks/Cole Publishing , 1982
 Buku Teks SO
Levin, Jonathan V.
The export economies : their pattern of development in historical perspective / Jonathan V. Levin
Harvard University Press , 1960
 Buku Teks
Gunawan P.
Bahasa pemrograman Fortran 77
Ganesa Exact, 1988
 Buku Teks SO
Zenoff, David B.
Private enterprise in the developing countries / David B. Zenoff
Prentice-Hall, 1969
 Buku Teks SO