APA (7th ed.) Citation

Halm, G. N. (1951). Economic systems: A comparative analysis. Rinehart.

Chicago Style (17th ed.) Citation

Halm, George Nikolaus. Economic Systems: A Comparative Analysis. New York: Rinehart, 1951.

MLA (9th ed.) Citation

Halm, George Nikolaus. Economic Systems: A Comparative Analysis. Rinehart, 1951.