Tohutoro APA (7th ed.)

ebrary, Inc. (2000). Trade blocs. Oxford University Press.

Tohutoru Kātū Chicago (17th ed.)

ebrary, Inc. Trade Blocs. Oxford, England ; New York: Oxford University Press, 2000.

Tohutoro MLA (9th ed.)

ebrary, Inc. Trade Blocs. Oxford University Press, 2000.