Small, Ernest; Paul M. Catling and Brenda Brooks (2012) (in english) Official Plant Emblems of Canada – A Biodiversity Treasure, Public Works and Government Services Canada in co-operation with Agriculture and Agri-Food Canada, p. 214 ISBN: 978-0-660-20057-6. A22-539/2012E
Appears with the caption: Purple saxifrage (saxifraga oppositifolia), photographed near Upernavik, Greenland on June 22, 2007. Photos reproduced by courtesy of Kim Hansen (available on Wikimedia Commons, where copyright restrictions are noted).
Small, Ernest; Paul M. Catling and Brenda Brooks (2012) (in french) Emblèmes floraux du Canada : un trésor de biodiversité, Travaux publics et Service gouvernementaux Canada en collaboration avec le ministère de l’Agriculture et Agroalimentaire Canada ISBN: 978-0-660-97424-8. A22-539/2012F
