APA引文

Machlup, F. (1962). The production and distribution of knowledge in the United States. Princeton, N.J: Princeton University press.

Trích dẫn kiểu Chicago

Machlup, Fritz. The Production and Distribution of Knowledge in the United States. Princeton, N.J: Princeton University press, 1962.

MLA引文

Machlup, Fritz. The Production and Distribution of Knowledge in the United States. Princeton, N.J: Princeton University press, 1962.

警告：这些引文格式不一定是100％准确.