COnyango & Tolba Mostafa. (1992). The World environment 1972-1992: Two decades of challenge. Chapman & Hall.
Chicagoスタイル(17版)引用形式COnyango , Tolba Mostafa. The World Environment 1972-1992: Two Decades of Challenge. London: Chapman & Hall, 1992.
MLA(9版)引用形式COnyango , Tolba Mostafa. The World Environment 1972-1992: Two Decades of Challenge. Chapman & Hall, 1992.
警告: この引用は必ずしも正確ではありません.