Hardwick, P., & Khan, B. (1986). An introduction to modern economics (2nd .ed.). Longman.
芝加哥风格引文Hardwick, Philip, 与 Bahadur Khan. An Introduction to Modern Economics. 2nd .ed. London: Longman, 1986.
MLA引文Hardwick, Philip, 与 Bahadur Khan. An Introduction to Modern Economics. 2nd .ed. Longman, 1986.
警告：这些引文格式不一定是100％准确.