APA (7th ed.) Citation

Heckscher, E. F. (1991). Heckscher-Ohlin trade theory. MIT.

Chicago Style (17th ed.) Citation

Heckscher, Eli F. Heckscher-Ohlin Trade Theory. Cambridge: MIT, 1991.

MLA (9th ed.) Citation

Heckscher, Eli F. Heckscher-Ohlin Trade Theory. MIT, 1991.

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