APA引文

.Grubel, H. G. (1981). International economics. R.D. Irwin.

芝加哥风格引文

.Grubel, Herbert G. International Economics. Homewood, Ill.: R.D. Irwin, 1981.

MLA引文

.Grubel, Herbert G. International Economics. R.D. Irwin, 1981.

警告：这些引文格式不一定是100％准确.