Cita APA (7a ed.)

Ohlin, B. (1957). Interregional and international trade. Harvard University Press.

Cita Chicago Style (17a ed.)

Ohlin, Bertil. Interregional and International Trade. Cambridge: Harvard University Press, 1957.

Cita MLA (8a ed.)

Ohlin, Bertil. Interregional and International Trade. Harvard University Press, 1957.