 Food Policy and Farm Programs, 1982, pg. 29 [15][permanent dead link]↑ 16.0 16.1 16.2 Peter Wallensteen, "Scarce Goods as Political Weapons: The Case of Food", Journal of Peace Research, 1976, Vol. 13 pg. 292 [16]↑ Nick Butler (1986). The international grain trade: problems and prospects. Routledge. p. 27. ISBN 9780709942184.↑ "Exempting Food and Agriculture Products from U.S. Economic Sanctions: Status and Implementation" (PDF). Congressional Research Service, republished by National Agricultural Law Center at the University of Arkansas. 2006-06-29. සම්ප්‍රවේශය 2010-01-20.↑ "Trade With Cuba". USDA. 2009-01-12. සම්ප්‍රවේශය 2010-01-20.↑ 20.0 20.1 20.2 20.3 20.4 Ray Bush, The Politics of Food and Starvation, Review of African Political Economy Vol. 23, No.68, Taylor and Francis, Ltd., 1996, pg. 172 [17]↑ 21.0 21.1 Ray Bush, "The Politics of Food and Starvation", Review of African Political Economy Vol. 23, No.68, Taylor and Francis, Ltd., 1996, pg. 170 [18]↑ 22.0 22.1 Ray 