Zafrullah, H. M. (1981). Sri Lanka's hybrid presidential and parliamentary system & the separation of powers doctrine. University of Malaya Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रZafrullah, H. M. Sri Lanka's Hybrid Presidential and Parliamentary System & the Separation of Powers Doctrine. Kuala Lumpur: University of Malaya Press, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रZafrullah, H. M. Sri Lanka's Hybrid Presidential and Parliamentary System & the Separation of Powers Doctrine. University of Malaya Press, 1981.
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