Gaya APA

Economics : principles, problems, and policies / Campbell R. McConnell, Stanley L. Brue. (1999). : Boston, Mass., Irwin : McGraw-Hill.

Gaya MLA

Economics : principles, problems, and policies / Campbell R. McConnell, Stanley L. Brue. 14th ed.. : Boston, Mass., Irwin : McGraw-Hill, 1999. Text.