APA

,, . (1999). United States: Executive order directing environmental reveiw of trade agreements. : WTO.

Chicago

,, . 1999. United States: Executive order directing environmental reveiw of trade agreements. : WTO.

Harvard

,, . (1999). United States: Executive order directing environmental reveiw of trade agreements. : WTO.

MLA

,, . United States: Executive order directing environmental reveiw of trade agreements. : WTO. 1999.