Verwysings
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- CATANIA , D J . 1989 . (red). Commodity trading manual. Chicago: The Chicago Board of Trade
- CHANCE , D M . 1987 . An introduction to options and futures. Chicago: The Dryden Press
- FALKENA , H B . 1989 . (ea). The futures market. Johannesburg: Southern Book Publishers (Pty) Ltd
- KEYSER , K. 1989 . Internasionale Graanposisie—Augustus. Pretoria: Mielieraad
- KEYSER , K. 1989 . Oorsig van die werking van 'n graantermynbeurs. Pretoria: Mielieraad
- LAMBRECHTS , I J . 1986 . (ea). Die investeringsbesluit. Tweede uitgawe. Pretoria: Opvoedkundige Uitgewery
- KROLL , S and SHISHKO , I. 1973 . The commodity futures market guide. New York: Harper and Row Publishers
- SIEGEL , D R and SIEGEL , FS. 1990 . The futures market. Hinsdale: The Dryden Press
- TEWELES , R J . 1974 . (ea). The commodity futures game Who wins? Who loose? Why? New York: McGraw-Hill, Inc