Lund, Philip J., author
Oliver & Boyd, 1971
Buku Teks
The Export-Import Bank of Japan, 1991
Buku Teks
Niken Larasati Sosodoro, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2013
UI - Skripsi (Membership)
George, F.H., author
Abacus Press, 1984
Buku Teks
Coates, C. Robert, author
McGraw-Hill, 1978
Buku Teks