APA (7th ed.) Citation

Ciccone, A., & Hall, R. E. (1993). Productivity and the density of economic activity.

Chicago Style (17th ed.) Citation

Ciccone, Antonio, and Robert E. Hall. Productivity and the Density of Economic Activity. Cambridge, MA, 1993.

MLA (9th ed.) Citation

Ciccone, Antonio, and Robert E. Hall. Productivity and the Density of Economic Activity. 1993.

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