1. Alston, G., 1847. Letter to The Times of London. September 7, 1847, Available at http://www.victorianlondon.org/entertainment/victoriapark.htm.
2. The Experience of Landscape;Appleton,1975
3. Natural Fit: Can Green space and Biodiversity Increase Levels of Physical Activity?;Bird,2004
4. Natural Thinking: Investigating the links between the Natural Environment, Biodiversity and Mental Health;Bird,2007
5. Bohn's Classical Library, 1897. Martial, Epigrams. Book 12, transcribed by R. Pearse, 2008, Available at www.ccel.org/ccel/pearse/morefathers/files/martial_epigrams_book12.htm, viewed 04/09/2010.