Gheddo, P. (1973). Why is the third world poor ? Orbis Books.
Chicagoスタイル(17版)引用形式Gheddo, Piero. Why Is the Third World Poor ? Nueva York: Orbis Books, 1973.
MLA(9版)引用形式Gheddo, Piero. Why Is the Third World Poor ? Orbis Books, 1973.
警告: この引用は必ずしも正確ではありません.