Cita APA (7a ed.)
Varallo, A. (2005). This day in history. University of Iowa Press.
Cita Chicago Style (17a ed.)
Varallo, Anthony. This Day in History. Iowa City, IA: University of Iowa Press, 2005.
Cita MLA (9a ed.)
Varallo, Anthony. This Day in History. University of Iowa Press, 2005.
Precaución: Estas citas no son 100% exactas.