Khan, H. (1990). Agricultural extension services in six selected villages of NWFP. Institute of Development Studies, N.W.F.P. Agricultural University.
Chicagoスタイル(17版)引用形式Khan, Humayun. Agricultural Extension Services in Six Selected Villages of NWFP. Peshawar, Pakistan: Institute of Development Studies, N.W.F.P. Agricultural University, 1990.
MLA(8版)引用形式Khan, Humayun. Agricultural Extension Services in Six Selected Villages of NWFP. Institute of Development Studies, N.W.F.P. Agricultural University, 1990.
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