McClafferty, C. K. (2013). Fourth down and inches: Concussions and football's make-or-break moment. Carolrhoda Books.
Cita Chicago Style (17a ed.)McClafferty, Carla Killough. Fourth Down and Inches: Concussions and Football's Make-or-break Moment. Minneapolis, MN: Carolrhoda Books, 2013.
Cita MLA (8a ed.)McClafferty, Carla Killough. Fourth Down and Inches: Concussions and Football's Make-or-break Moment. Carolrhoda Books, 2013.
Precaución: Estas citas no son 100% exactas.