O'Connor, J., & Hammond, T. (2016). What were the Twin Towers? Grosset & Dunlap.
Cita Chicago Style (17a ed.)O'Connor, Jim, y Ted Hammond. What Were the Twin Towers? New York: Grosset & Dunlap, 2016.
Cita MLA (8a ed.)O'Connor, Jim, y Ted Hammond. What Were the Twin Towers? Grosset & Dunlap, 2016.
Precaución: Estas citas no son 100% exactas.