Rujukan Ryuka

  • Kei Higa Okinawa Encyclopedia1983, Okinawa Times, Naha, jou, chu, ge.
  • Yoji Aoyama Ryūka Omoshiro Tokuhon (Interesting Ryukas) 1998, Kyodo Shuppan, Naha
  • Nihon Shodou Bijutukan　Ryuka - the heart of the poems of the Southern Island 1992, Kyoiku Shodo Shuppan Kyokai, Tokyo
  • Masanori Nakahodo Various aspects of Okinawan literature, Postwar literature, Dialect poems, Dramas, Ryūka, Tanka 2010, Borderink, Naha, ISBN 978-4-89982-168-7