Citazione Stile APA (7a Edizione)
Anderson, W. I. (1998). Iowa's geological past: Three billion years of earth history. University of Iowa Press.
Citazione stile Chigago Style (17a edizione)
Anderson, Wayne I. Iowa's Geological Past: Three Billion Years of Earth History. Iowa City: University of Iowa Press, 1998.
Citatione MLA (9a ed.)
Anderson, Wayne I. Iowa's Geological Past: Three Billion Years of Earth History. University of Iowa Press, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.