Glassburner, Bruce, author
ASEAN-Australia Joint Research Project, 1984
Buku Teks
Boulding, Kenneth E. (Kenneth Ewart), 1910-1993, author
Prentice-Hall, 1958
Buku Teks
Tinbergen, Jan, 1903-, author
North-Holland Publishing , 1952
Buku Teks
Lewis, William Arthur, 1915-, author
Harper & Row, 1966
Buku Teks
Boeke, J.H., author
Tjeenk Willink & Zoon, 1963
Buku Teks