Imperative turns at talk : the design of directives in action / edited by Marja-Leena Sorjonen, Liisa Raevaara, Elizabeth Couper-Kuhlen (University of Helsinki). - Sorjonen, Marja-Leena; Raevaara, Liisa; Couper-Kuhlen, Elizabeth (Studies in language and social interaction ;, 2017)