↑ Ricklefs, M.C. (1 tháng 10 năm 1999), “TIME AND TIME AGAIN IN JAVA.(the complex system of calendrical time in Java, and its relationship with religion)”, History Today, History Today Ltd, 49 (10): 34, ISSN0018-2753
↑ see also the subsequent later move from Kartasura to Surakarta in chapter one of Pemberton, John (1994), On the subject of "Java", Cornell University Press, ISBN978-0-8014-9963-0