Não informado. (1987). Agricultural Administration and Extension. Elsevier Applied Science.
Chicagoスタイル(17版)引用形式Não informado. Agricultural Administration and Extension. Essex, Inglaterra: Elsevier Applied Science, 1987.
MLA(8版)引用形式Não informado. Agricultural Administration and Extension. Elsevier Applied Science, 1987.
警告: この引用は必ずしも正確ではありません.