APA (7th ed.) Citation

Kotany, L. (1934). The science of economy. G. P. Putnam's Sons.

Chicago Style (17th ed.) Citation

Kotany, Ludwig. The Science of Economy. New York, London: G. P. Putnam's Sons, 1934.

MLA (9th ed.) Citation

Kotany, Ludwig. The Science of Economy. G. P. Putnam's Sons, 1934.