*[[Robert Sakai|Sakai, Robert K.]] “The Ryukyu (Liu-ch’iu) Islands as a Fief of Satsuma,” in [[John King Fairbank]] (ed.), ''The Chinese World Order'', Harvard University Press (1968), 119-120. | *[[Robert Sakai|Sakai, Robert K.]] “The Ryukyu (Liu-ch’iu) Islands as a Fief of Satsuma,” in [[John King Fairbank]] (ed.), ''The Chinese World Order'', Harvard University Press (1968), 119-120. |