APA Citation

(1900). Key to economic science. La Hague Netherlands: Library and Documentation Center of Economic Information Service.

Chicago Style Citation

Key to Economic Science. La Hague Netherlands: Library and Documentation Center of Economic Information Service, 1900.

MLA Citation

Key to Economic Science. La Hague Netherlands: Library and Documentation Center of Economic Information Service, 1900.

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