Congressional Research Training Service. (1991). Comparative parliamentary systems. The Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCongressional Research Training Service. Comparative Parliamentary Systems. Quezon City: The Service, 1991.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCongressional Research Training Service. Comparative Parliamentary Systems. The Service, 1991.
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