Tilaar, Martha, author
Gramedia Pustaka Utama, 2015
Buku Teks
Scott-ram, Richard
The Australian Gold Conference, 1994
Buku Teks
Gold, Joseph
International Monetary Fund, 1980
Buku Teks
Westview Press, 1990
Buku Teks
Triffin, Robert, author
Yale University Press, 1961
Buku Teks