APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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