Boulding, Kenneth E. (Kenneth Ewart), 1910-1993, author
Harper, 1963
Buku Teks
Asser Press, 2004
Buku Teks
Universitas Indonesia, 1993
UI - Skripsi (Membership)
Lamb, Alastair
Oxford University Press, 1964
Buku Teks
[publisher not identified], 1975
Buku Teks