APA ציטוט

Knox, P. L. (1994). The geography of the world economy: An introduction to economic geography. London: Arnold.

Trích dẫn kiểu Chicago

Knox, Paul L. The Geography of the World Economy: An Introduction to Economic Geography. London: Arnold, 1994.

ציטוט MLA

Knox, Paul L. The Geography of the World Economy: An Introduction to Economic Geography. London: Arnold, 1994.