Hyles, G. (1978). Economics and natural law: Incorporating a complete importing and exporting system (2nd ed.). International Barter Campaign.
芝加哥风格引文Hyles, Graham. Economics and Natural Law: Incorporating a Complete Importing and Exporting System. 2nd ed. Hall, A.C.T.: International Barter Campaign, 1978.
MLA引文Hyles, Graham. Economics and Natural Law: Incorporating a Complete Importing and Exporting System. 2nd ed. International Barter Campaign, 1978.
警告：这些引文格式不一定是100％准确.