Citazione Stile APA (7a Edizione)

Lewis, W. A. (1969). Some aspects of economic development. Ghana publishing press.

Citazione stile Chigago Style (17a edizione)

Lewis, W. Arthur. Some Aspects of Economic Development. Accra: Ghana publishing press, 1969.

Citatione MLA (9a ed.)

Lewis, W. Arthur. Some Aspects of Economic Development. Ghana publishing press, 1969.