APA (7th ed.) Citation

Olsen, E. (1971). International trade theory and regional income differences: United States 1880-1950. North-Holland Pub. Co..

Chicago Style (17th ed.) Citation

Olsen, Erling. International Trade Theory and Regional Income Differences: United States 1880-1950. Amsterdam: North-Holland Pub. Co., 1971.

MLA (9th ed.) Citation

Olsen, Erling. International Trade Theory and Regional Income Differences: United States 1880-1950. North-Holland Pub. Co., 1971.

Warning: These citations may not always be 100% accurate.