Theorizing and analyzing agency in second language learning, edited by Ping Deters, Xuesong Gao, Elizabeth R. Miller, and Gergana Vitanova: Bristol, Multingual Matters, 2014, v + 281pp., £29.95 (paperback), ISBN 978-1-78309-288-8, £20.00 (ebook), ISBN 978-1-78309-291-8. (2nd January 2016)