APA

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

Chicago

Kotany Ludwig, . 1934. The science of economy. New York: G.P. Putnam's Sons.

Harvard

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

MLA

Kotany Ludwig, . The science of economy. New York: G.P. Putnam's Sons. 1934.