1. Aitchison, K. 2011 Survey of Archaeological Specialists 2010-11, Edinburgh: Landward Research. https://landward.eu/wp-content/uploads/2011/06/Survey-of-Archaeological-Specialists-2010-11.pdf [Last accessed: 16 June 2019]
2. Aitchison, K. 2016 Archaeological Market Survey 2016, Edinburgh: Landward Research. https://landward.eu/wp-content/uploads/2016/11/Archaeological-Market-Survey-2016.pdf [Last accessed: 16 June 2019]
3. Aitchison, K. 2017 Survey of Archaeological Specialists 2016-17, Edinburgh: Landward Research. https://landward.eu/wp-content/uploads/2017/07/Survey_Archaeological_Specialists_201617.pdf [Last accessed: 16 June 2019]
4. Albarella, U. 2001 'Exploring the real nature of environmental archaeology: an introduction' in U. Albarella (ed) Environmental Archaeology: Meaning and Purpose, Dordrecht: Kluwer. 3-16. https://doi.org/10.1007/978-94-015-9652-7_1
5. Barker, G. 2001 'Agendas for environmental archaeology' in U. Albarella (ed) Environmental Archaeology: Meaning and Purpose, Dordrecht: Kluwer. 305-14. https://doi.org/10.1007/978-94-015-9652-7_24