Template:Gordon, 2009d
- Gordon, D.P. 2009. 20. Phylum Xenoturbellida: xenoturbellids. Pp. 369–370 in: Gordon, D.P. (ed.). 2009. New Zealand inventory of biodiversity. Volume 1. Kingdom Animalia. Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press: Christchurch, New Zealand. ISBN 978-1-87725772-8. Reference page.