Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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