セイヨウカジカエデ
southwestnrm.org.au/sites/default/files/uploads/ihub/csurhes-s-edwards-r-1998-potential-environmental-weeds-australia-candidate-species.pdf
↑ Howell, Clayston (May 2008). Consolidated list of environmental weeds in New Zealand. 292. Wellington, NZ.: Department of Conservation. ISBN 978-0-478-14413-0
1 2 Sycamore maple invasive species in Norway
↑ “Eco Tree Care & Conservation – Woodland Management, Firewood Logs, Consultancy, Tree Surgery, Tree Surgeons and Conservation in Hertfordshire & Essex”. Ecotreecare.co.uk. 2014年8月26日閲覧。
↑ “Interim List of Invasive Plant Species in New York State”. Advisory Invasive Plant List. New York State Department of Environmental Conservation. 2013年5月12日時点のオリジナルよりアーカイブ。