WALKER, J. A. (1991). How The Options Markets Work / Joseph A. Walker. New York International Financi.
Lua i Stíl Chicago (17ú heag.)WALKER, Joseph A. How The Options Markets Work / Joseph A. Walker. New York International Financi, 1991.
Lua MLA (8ú heag.)WALKER, Joseph A. How The Options Markets Work / Joseph A. Walker. New York International Financi, 1991.
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