(2019). Political and economic systems: Democracy. 3G E-LEARNING.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPolitical and Economic Systems: Democracy. New York: 3G E-LEARNING, 2019.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPolitical and Economic Systems: Democracy. 3G E-LEARNING, 2019.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.