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References
- ↑ Houghton, Bruce (1977). Geology of the Takitimu group and associated intrusive rocks, central Takitimu Mountains, western Southland, New Zealand (Doctoral thesis). OUR Archive, University of Otago. hdl:10523/3991.
- ↑ University of Hawai'i: Department of Geology and Geophysics profile Archived 9 June 2010 at the Wayback Machine
- ↑ Houghton, Bruce. "Bruce Houghton appointed to the Gordon A Macdonald chair in volcanology". Institute of Geological & Nuclear Sciences Limited (GNS), New Zealand. Archived from the original on 22 May 2010. Retrieved 19 May 2010.
- ↑ Morton, Jamie (31 August 2017). "Kiwi 'giant of volcanology' Bruce Houghton wins world honour". New Zealand Herald. Retrieved 5 May 2018.
