Segura, O. (2000). The payment system for environmental services is in danger.
シカゴスタイル引用形Segura, Olman. The Payment System for Environmental Services Is in Danger. 2000.
MLA引用形式Segura, Olman. The Payment System for Environmental Services Is in Danger. 2000.
警告: この引用は必ずしも正確ではありません.