APA引文

Helen Dwight Reid Educational Foundation. (2003). Environment. Washington, DC: Heldref Publications.

Trích dẫn kiểu Chicago

Helen Dwight Reid Educational Foundation. Environment. Washington, DC: Heldref Publications, 2003.

MLA引文

Helen Dwight Reid Educational Foundation. Environment. Washington, DC: Heldref Publications, 2003.

警告：这些引文格式不一定是100％准确.