Warmke, R. F. Consumer economic problems (8th ed.). South-Western Pub.
芝加哥风格引文Warmke, Roman F. Consumer Economic Problems. 8th ed. Cincinnati: South-Western Pub.
MLA引文Warmke, Roman F. Consumer Economic Problems. 8th ed. South-Western Pub.
警告：这些引文格式不一定是100％准确.