National Planning Institute. (1991). Prices and marketing policies in agriculture: Cairo : 17 nov- 5 dec- 1991. National Planning Institute.
Lua i Stíl Chicago (17ú heag.)National Planning Institute. Prices and Marketing Policies in Agriculture: Cairo : 17 Nov- 5 Dec- 1991. cairo: National Planning Institute, 1991.
Lua MLA (9ú heag.)National Planning Institute. Prices and Marketing Policies in Agriculture: Cairo : 17 Nov- 5 Dec- 1991. National Planning Institute, 1991.