Douglas Walton, Burden of Proof, Presumption and Argumentation, Cambridge University Press, 2014, 318 pp., US$ 85.00 (hc) ISBN 978-1-107-04662-7, US$32.99 (pbk) ISBN 978-1-107-67882-8, US$26.00 (e-bk) ISBN 978-1-139-95048-0.