Invasive species are a problem in parts of Barrington Tops. Feral horses, goats, dogs, cats, pigs, foxes and deer occur in the area and control measures are undertaken by the National Parks and Wildlife Service. Scotch broom (Cytisus scoparius) infests 10,000 ha (20,000 acres) of the National Park and biological control agents including the broom gall mite (Aceria genistae) are being tested for their effectiveness.
- The tourist will search in vain on our maps for the area known as “Barrington Tops.” It is not crossed by any road, nor does any road capable of being used - see "BARRINGTON TOPS", The Newcastle and Maitland Catholic Sentinel, iii (4): 98, 1 January 1934, ISSN 2206-5466
- Hancock, Allan; Gresford District Historical Society (issuing body) (2016), Edgar Marceau the man and his photography : a 1920s photographic legacy of the Barrington Tops, the Allyn Valley and its people, East Gresford, NSW Gresford District Historical Society Inc, retrieved 26 June 2018
- "Barrington Tops National Park". New South Wales National Parks and Wildlife Service. Retrieved 26 June 2018.
- "Barrington Tops State Conservation Area". New South Wales National Parks and Wildlife Service. Archived from the original on 26 June 2018. Retrieved 26 June 2018.
- Thompson, Frances; Sharpe, Donna (29 December 2011). "Ferals under fire in Barrington Tops". Newcastle Herald. Retrieved 26 June 2018.
- "Weed management in NSW national parks" (PDF). New South Wales Government Department of Environment and Conservation. Retrieved 26 June 2018.