Calvocoressi, Peter
Longman, 1991
Buku Teks
Rourke, John T., author
McGraw-Hill, 2010
Buku Teks
Lerche, Charles O., Jr., author
Oxford University Press, 1956
Buku Teks
Kalijarvi, Thorsten V., author
Thomas Y. Crowell, 1954
Buku Teks
Andrew Hurrell, Ngaire Woods, Satria Utama S., Diana Arimbi
Fakultas Ekonomi UI, 2001
Buku Teks