Lua APA (7ú heag.)
Lavergne, G. M. (1997). A sniper in the Tower: The Charles Whitman murders. University of North Texas Press.
Lua i Stíl Chicago (17ú heag.)
Lavergne, Gary M. A Sniper in the Tower: The Charles Whitman Murders. Denton: University of North Texas Press, 1997.
Lua MLA (9ú heag.)
Lavergne, Gary M. A Sniper in the Tower: The Charles Whitman Murders. University of North Texas Press, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.