Παραπομπή σε μορφή APA (7η εκδ.)

Greenaway, D., & Milner, C. (1979). Protectionism again?: Causes and consequences of a retreat from freer trade. Institute of Economic Affairs.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Greenaway, David, και Christopher Milner. Protectionism Again?: Causes and Consequences of a Retreat from Freer Trade. London: Institute of Economic Affairs, 1979.

Παραπομπή σε μορφή MLA (9th εκδ.)

Greenaway, David, και Christopher Milner. Protectionism Again?: Causes and Consequences of a Retreat from Freer Trade. Institute of Economic Affairs, 1979.