Delmer M. Brown , Future and the Past: A Translation and Study of the Gukanshō (em inglês) University of California Press, 1979 p. 68 ISBN 9780520034600
Herbert E. Plutschow Japan's Name Culture: The Significance of Names in a Religious, Political and Social Context (em inglês) Psychology Press, 1995 p. 100 ISBN 9781873410424
Joshua S. Mostow, At the House of Gathered Leaves: Shorter Biographical and Autobiographical Narratives from Japanese Court Literature (em inglês) University of Hawaii Press, 2004 p.3 ISBN 9780824827786