1. ABS (Australian Bureau of Statistics). 2007. The Construction Industry’s Linkages with the Economy. Belconnen, Australian Capital Territory. http://www.abs.gov.au/Ausstats/abs@.nsf/94713ad445ff1425ca25682000192af2/ed6220072793785eca256b360003228f!OpenDocument .
2. AfDB (African Development Bank). 2013. Recognizing Africa’s Informal Sector. Abidjan. http://www.afdb.org/en/blogs/afdb-championing-inclusive-growth-across-africa/post/recognizing-africas-informal-sector-11645/ .
3. Akerlof, G. 1970. The Market for ‘Lemons’: Quality Uncertainty and the Market Mechanism. Quarterly Journal of Economics 84: 488–500.
4. Altus Group Economic Consulting. 2009. Economic Impacts of Residential Construction. Report for the Canada Mortgage and Housing Corporation, Ottawa. http://www2.hamilton.ca/NR/rdonlyres/1F84E3C3-009A-46AF-B95E-7F6D3F05D697/0/Jun17Item88iieconomicimpact.pdf .
5. Ball, Michael. 2015. The Labor Needs of Extra Housing Output: Can the Housebuilding Industry Cope, Report for the Home Builders Federation, London. http://www.hbf.co.uk/?eID=dam_frontend_push&docID=20266&filename=CITB_REPORT.pdf .