HEATER, D., & BERRIDGE, R. (1992). Introduction to international politics. Harvester Wheatsheaf.
Lua i Stíl Chicago (17ú heag.)HEATER, Derek, agus R. BERRIDGE. Introduction to International Politics. New york: Harvester Wheatsheaf, 1992.
Lua MLA (9ú heag.)HEATER, Derek, agus R. BERRIDGE. Introduction to International Politics. Harvester Wheatsheaf, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.