Purcell, M. H. (2013). The down-deep delight of democracy. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Purcell, Mark Hamilton. The Down-deep Delight of Democracy. Chichester, West Sussex: John Wiley & Sons, 2013.
Lua MLA (9ú heag.)Purcell, Mark Hamilton. The Down-deep Delight of Democracy. John Wiley & Sons, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.