Rhona C. Free. 21st Century Economics: A Reference Handbook. SAGE.
芝加哥风格引文Rhona C. Free. 21st Century Economics: A Reference Handbook. SAGE.
MLA引文Rhona C. Free. 21st Century Economics: A Reference Handbook. SAGE.
警告：这些引文格式不一定是100％准确.
APA引文