Firestone, M., & Skeens, M. (2007). The Liberty Bell. Picture Window Books.
Cita Chicago Style (17a ed.)Firestone, Mary., y Matthew Skeens. The Liberty Bell. Minneapolis, Minn.: Picture Window Books, 2007.
Cita MLA (8a ed.)Firestone, Mary., y Matthew Skeens. The Liberty Bell. Picture Window Books, 2007.
Precaución: Estas citas no son 100% exactas.