Conninx, R. G. (1990). Foreign Exchange Today Raymond G. Conninx. Woodhead-Faulkner.
Lua i Stíl Chicago (17ú heag.)Conninx, Raymond G. Foreign Exchange Today Raymond G. Conninx. Woodhead-Faulkner, 1990.
Lua MLA (8ú heag.)Conninx, Raymond G. Foreign Exchange Today Raymond G. Conninx. Woodhead-Faulkner, 1990.
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