McCain, J., & Salter, M. (2007). Hard call: Great decisions and the extraordinary people who made them. Twelve.
Cita Chicago Style (17a ed.)McCain, John, y Mark Salter. Hard Call: Great Decisions and the Extraordinary People Who Made Them. New York: Twelve, 2007.
Cita MLA (8a ed.)McCain, John, y Mark Salter. Hard Call: Great Decisions and the Extraordinary People Who Made Them. Twelve, 2007.
Precaución: Estas citas no son 100% exactas.