Kolb, R. W., & Overdahl, J. A. (2006). Understanding futures markets (6th ed.). Blackwell Pub.
Lua i Stíl Chicago (17ú heag.)Kolb, Robert W., agus James A. Overdahl. Understanding Futures Markets. 6th ed. Malden, MA ; Oxford: Blackwell Pub, 2006.
Lua MLA (9ú heag.)Kolb, Robert W., agus James A. Overdahl. Understanding Futures Markets. 6th ed. Blackwell Pub, 2006.
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