Duggan, M B (1989). "Northern New South Wales: Warrumbungle". In Johnson, R. Wally; Knutson, Jan; Taylor, Stuart Ross; Australian Academy of Science (eds.). Intraplate Volcanism in Eastern Australia and New Zealand. Cambridge University Press. p. 121. ISBN0521380839. Archived from the original on 20 February 2017. Retrieved 25 August 2014.
Duggan, M B (1989). "Northern New South Wales: Warrumbungle". In Johnson, R. Wally; Knutson, Jan; Taylor, Stuart Ross; Australian Academy of Science (eds.). Intraplate Volcanism in Eastern Australia and New Zealand. Cambridge University Press. p. 121. ISBN0521380839. Archived from the original on 20 February 2017. Retrieved 25 August 2014.