Korteweg. (1966). A textbhook of money. Longmans Green.
Lua i Stíl Chicago (17ú heag.)Korteweg. A Textbhook of Money. London: Longmans Green, 1966.
Lua MLA (9ú heag.)Korteweg. A Textbhook of Money. Longmans Green, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.