Long, D. E. (1978). The Persian Gulf: An introduction to its peoples, politics, and economics (2nd ed.). Westview Press.
Lua i Stíl Chicago (17ú heag.)Long, David E. The Persian Gulf: An Introduction to Its Peoples, Politics, and Economics. 2nd ed. Boulder, Colo: Westview Press, 1978.
Lua MLA (9ú heag.)Long, David E. The Persian Gulf: An Introduction to Its Peoples, Politics, and Economics. 2nd ed. Westview Press, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.