Cita APA (7th ed.)
Roepke, W., Campbell, W. F., & Kirk, R. The Social Crisis of Our Time. Transaction.
Cita Chicago (17th ed.)
Roepke, Wilhelm, William F. Campbell, i Russell Kirk. The Social Crisis of Our Time. New Brunswick, EUA: Transaction.
Cita MLA (9th ed.)
Roepke, Wilhelm, et al. The Social Crisis of Our Time. Transaction.
Atenció: Aquestes cites poden no estar 100% correctes.