APA (7th ed.) Citation

Copp, P. M., Coyle, J. J., Cunningham, C. H., & Hollis, W. S. (1927). Portugal: Resources, economic conditions, trade, and finance. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Copp, Philip Mauro, John J. Coyle, Charles Henry Cunningham, and William Stanley Hollis. Portugal: Resources, Economic Conditions, Trade, and Finance. [Washington?]: U.S. Government Printing Office, 1927.

MLA (9th ed.) Citation

Copp, Philip Mauro, et al. Portugal: Resources, Economic Conditions, Trade, and Finance. U.S. Government Printing Office, 1927.