APA (7th ed.) Citation

Keller, W. (1999). How trade patterns and technology flows affect productivity growth.

Chicago Style (17th ed.) Citation

Keller, Wolfgang. How Trade Patterns and Technology Flows Affect Productivity Growth. Cambridge, Mass, 1999.

MLA (9th ed.) Citation

Keller, Wolfgang. How Trade Patterns and Technology Flows Affect Productivity Growth. 1999.

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