Lua APA (7ú heag.)
Anderson, W. I. (1998). Iowa's geological past: Three billion years of earth history. University of Iowa Press.
Lua i Stíl Chicago (17ú heag.)
Anderson, Wayne I. Iowa's Geological Past: Three Billion Years of Earth History. Iowa City: University of Iowa Press, 1998.
Lua MLA (9ú heag.)
Anderson, Wayne I. Iowa's Geological Past: Three Billion Years of Earth History. University of Iowa Press, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.