Citazione Stile APA (7a Edizione)

Preston, L. E. (1970). Trade patterns in the Middle East. American Enterprise Institute for Public Policy Research.

Citazione stile Chigago Style (17a edizione)

Preston, Lee E. Trade Patterns in the Middle East. Washington, D.C: American Enterprise Institute for Public Policy Research, 1970.

Citatione MLA (9a ed.)

Preston, Lee E. Trade Patterns in the Middle East. American Enterprise Institute for Public Policy Research, 1970.