http://criminal-justice.iresearchnet.com/ – a generally useful website for this chapter

https://www.ncjrs.gov/pdffiles1/Digitization/94258NCJRS.pdf – the Chicago project (see page 396) 50 years on

http://www.securedbydesign.com/ – a policy information website about ‘Secured by Design’, a police security initiative

https://societyforhumanecology.org/ – the website of the Society for Humane Ecology, a multi-disciplinary group promoting the use of ecology to solve problems

http://www.popcenter.org/ – the website of the Centre for Problem-Oriented Policing

http://www.iep.utm.edu/ – an encyclopaedia of psychology in which you can look up many of the theorists mentioned in the chapter

http://www.scopic.ac.uk/StudiesPADS.html – the website of the Peterborough Adolescent and Young Adult Development Study (PADS), an on-going (for more than 12 years) study investigating situational influences on young people and their communities