Hill (June 1960), p. 98, quoting Hikayat Raja-Raja Pasai, 3: 98: "After that, he is tasked by His Majesty to ready all the equipment and all weapons of war to come to that country of Pasai, about four hundred large jongs and other than that much more of malangbang and kelulus.", also Nugroho (2011). p. 286: "Sa-telah itu, mak disuroh baginda musta'idkan segala kelengkapan dan segala alat senjata peperangan akan mendatangi negeri Pasai itu, sa-kira-kira empat ratus jong yang besar-besar dan lain daripada itu banyak lagi daripada malangbang dan kelulus." Hill, A. H. (June 1960). "Hikayat Raja-Raja Pasai". Journal of the Malaysian Branch of the Royal Asiatic Society. 33: 1-215.
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Johns, Anthony H. (Noviembre de 1964). «The Role of Structural Organisation and Myth in Javanese Historiography». The Journal of Asian Studies24 (1): 91-99. JSTOR2050416. doi:10.2307/2050416.
Sastrawan, Wayan Jarrah (9 de enero de 2020). «Was Majapahit really an empire?». New Mandala(en inglés australiano). Consultado el 1 de noviembre de 2020.