hammam, e. e. d. (1963). economics of agricultural production and resource use. the institute of national planning.
Cita Chicago (17th ed.)hammam, ezz el din. Economics of Agricultural Production and Resource Use. cairo: the institute of national planning, 1963.
Cita MLA (9th ed.)hammam, ezz el din. Economics of Agricultural Production and Resource Use. the institute of national planning, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.