(2020). Environment at a glance 2020. Organisation for Economic Co-Operation and Development.
芝加哥风格引文Environment at a Glance 2020. Paris, France: Organisation for Economic Co-Operation and Development, 2020.
MLA引文Environment at a Glance 2020. Organisation for Economic Co-Operation and Development, 2020.
警告：这些引文格式不一定是100％准确.