Ritter, U. P. (1996). Problems of Structural Change in the 21st Century: National and Comparative Research from Argentina, Brazil and Germany. Editorial Iberoamericana / Vervuert.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRitter, Ulrich Peter. Problems of Structural Change in the 21st Century: National and Comparative Research from Argentina, Brazil and Germany. Alemania: Editorial Iberoamericana / Vervuert, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRitter, Ulrich Peter. Problems of Structural Change in the 21st Century: National and Comparative Research from Argentina, Brazil and Germany. Editorial Iberoamericana / Vervuert, 1996.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.