Isaac, J. P. (1971). Factors in the ruin of antiquity: A criticism of ancient civilization. Printed by Bryant Press.
Lua i Stíl Chicago (17ú heag.)Isaac, James Paton. Factors in the Ruin of Antiquity: A Criticism of Ancient Civilization. [S.l: Printed by Bryant Press, 1971.
Lua MLA (9ú heag.)Isaac, James Paton. Factors in the Ruin of Antiquity: A Criticism of Ancient Civilization. Printed by Bryant Press, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.