APA

Halm G. N., . (1946). Monetary theory. Philadelphia: Blakiston.

Chicago

Halm George Nikilaus, . 1946. Monetary theory. Philadelphia: Blakiston.

Harvard

Halm G. N., . (1946). Monetary theory. Philadelphia: Blakiston.

MLA

Halm George Nikilaus, . Monetary theory. Philadelphia: Blakiston. 1946.