Palmer, N. D., & Perkins, H. C. (1957). International relations: The world community in transition (2nd ed.). Stevens.
Lua i Stíl Chicago (17ú heag.)Palmer, Norman Dunbar, agus Howard Cecil Perkins. International Relations: The World Community in Transition. 2nd ed. London: Stevens, 1957.
Lua MLA (8ú heag.)Palmer, Norman Dunbar, agus Howard Cecil Perkins. International Relations: The World Community in Transition. 2nd ed. Stevens, 1957.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.