Ball, D. (2017). Backwards and forwards: A technical manual for reading plays. Southern Illinois University Press.
Citazione stile Chigago Style (17a edizione)Ball, David. Backwards and Forwards: A Technical Manual for Reading Plays. Carbondale: Southern Illinois University Press, 2017.
Citatione MLA (9a ed.)Ball, David. Backwards and Forwards: A Technical Manual for Reading Plays. Southern Illinois University Press, 2017.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.