Steadman, D. W. 1986. Two new species of rails (Aves: Rallidae) from Mangaia, southern Cook Islands. Pacific Science 40(1-4): 27-43.
Taylor, B. 1998. Rails: a guide to the rails, crakes, gallinules and coots of the world. Pica Press, Robertsbridge, UK.
BirdLife International (2019) Species factsheet: Zapornia monasa. Downloaded from http://www.birdlife.org on 25/05/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 25/05/2019.