Ginn, Franklin (2009). “Colonial transformations: Nature, progress and science in the Christchurch Botanic Gardens”. New Zealand Geographer (Wiley Online Library) 65 (1): 35–47. Bibcode: 2009NZGeo..65...35G. doi:10.1111/j.1745-7939.2009.01146.x.
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Ginn, Franklin (2009). “Colonial transformations: Nature, progress and science in the Christchurch Botanic Gardens”. New Zealand Geographer (Wiley Online Library) 65 (1): 35–47. Bibcode: 2009NZGeo..65...35G. doi:10.1111/j.1745-7939.2009.01146.x.