TVE international. (1997). Science for survival. Television Trust for Environment.
Chicagoスタイル(17版)引用形式TVE international. Science for Survival. London, UK: Television Trust for Environment, 1997.
MLA(9版)引用形式TVE international. Science for Survival. Television Trust for Environment, 1997.
警告: この引用は必ずしも正確ではありません.