Não informado. (1971). IDS Communication. University of Sussex, Institute of Development Studies.
Chicagoスタイル(17版)引用形式Não informado. IDS Communication. Brighton, Inglaterra: University of Sussex, Institute of Development Studies, 1971.
MLA(8版)引用形式Não informado. IDS Communication. University of Sussex, Institute of Development Studies, 1971.
警告: この引用は必ずしも正確ではありません.