Williams, M. E. (2003). Is global warming a threat? Thomson/Gale.
Chicagoスタイル(17版)引用形式Williams, Mary E. Is Global Warming a Threat? San Diego, Calif: Thomson/Gale, 2003.
MLA(8版)引用形式Williams, Mary E. Is Global Warming a Threat? Thomson/Gale, 2003.
警告: この引用は必ずしも正確ではありません.