Lua APA (7ú heag.)
Roberts, J., & Curtis, H. (1973). Civilization: Volume 1: the emergence of man in society. Communications research machines.
Lua i Stíl Chicago (17ú heag.)
Roberts, John, agus Helena Curtis. Civilization: Volume 1: The Emergence of Man in Society. California: Communications research machines, 1973.
Lua MLA (9ú heag.)
Roberts, John, agus Helena Curtis. Civilization: Volume 1: The Emergence of Man in Society. Communications research machines, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.