Cita APA (7th ed.)

(1987). Protectionism and liberalization / Under Secretary Wallis.

Cita Chicago (17th ed.)

Protectionism and Liberalization / Under Secretary Wallis. 1987.

Cita MLA (9th ed.)

Protectionism and Liberalization / Under Secretary Wallis. 1987.

Atenció: Aquestes cites poden no estar 100% correctes.