Lua APA (7ú heag.)
Harwood, E. (2008). Digital CCTV: A security professional's guide. Elsevier/Butterworth-Heinemann.
Lua i Stíl Chicago (17ú heag.)
Harwood, Emily. Digital CCTV: A Security Professional's Guide. Amsterdam ; Boston: Elsevier/Butterworth-Heinemann, 2008.
Lua MLA (9ú heag.)
Harwood, Emily. Digital CCTV: A Security Professional's Guide. Elsevier/Butterworth-Heinemann, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.