Action research communities: professional learning, empowerment, and improvement through action research: by Craig A. Mertler, Abingdon, Oxford; New York, NY, Routledge, 2018, 126 pp., $30.95 (Paperback), ISBN 978-1-13-805795-1; $160.00 (Hardback), ISBN 978-1-13-805794-4; $15.48 (eBook), ISBN 978-1-31-516456-4. Issue 5 (20th October 2019)