hammam, e. e. d. (1963). economics of agricultural production and resource use. the institute of national planning.
Lua i Stíl Chicago (17ú heag.)hammam, ezz el din. Economics of Agricultural Production and Resource Use. cairo: the institute of national planning, 1963.
Lua MLA (9ú heag.)hammam, ezz el din. Economics of Agricultural Production and Resource Use. the institute of national planning, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.