Landauer, C. (1964). Contemporary economic systems: A comparative analysis. Lippincott.
Chicago Style (17. basım) AtıfLandauer, Carl. Contemporary Economic Systems: A Comparative Analysis. Philadelphia: Lippincott, 1964.
MLA (9th ed.) AtıfLandauer, Carl. Contemporary Economic Systems: A Comparative Analysis. Lippincott, 1964.