^Fukunaga, Yukiyo; Ichikawa, Natsuko (2014). "The Class Holophagaceae". In Eugene Rosenberg; Edward F. DeLong; Stephen Lory; Erko Stackebrandt; Fabiano Thompson (eds.). The Prokaryotes – Other Major Lineages of Bacteria and The Archaea. pp. 683–687. doi:10.1007/978-3-642-38954-2_161. ISBN978-3-642-38953-5.