"Socio-Economic Background". Halcrow Group Greater POS report. Nalis.gov.tt. 2 April 2000. Archived from the original on 4 June 2008. Retrieved 26 June 2010.
"Socio-Economic Background". Halcrow Group Greater POS report. Nalis.gov.tt. 2 April 2000. Archived from the original on 4 June 2008. Retrieved 26 June 2010.