Higginson, William J. The Haiku Handbook, Kodansha International, 1985, ISBN 4-7700-1430-9, pp. 20 — Ҙур совет энциклопедияһында мәҡәлә MacWilliams, Mark W. Japanese Visual Culture: Explorations in the World of Manga and Anime — M.E. Sharpe, 2008. — 352 б. — ISBN 978-0-76-561602-9.