Beer, D. (2016). Metric power. London : Palgrave Macmillan UK : Imprint: Palgrave Macmillan.
Lua i Stíl Chicago (17ú heag.)Beer, David. Metric Power. London : Palgrave Macmillan UK : Imprint: Palgrave Macmillan, 2016.
Lua MLA (9ú heag.)Beer, David. Metric Power. London : Palgrave Macmillan UK : Imprint: Palgrave Macmillan, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.