@incollection{Proost2015,
  author    = {Proost, Kristel},
  title     = {Speech Act Verbs},
  booktitle = {Concise encyclopedia of semantics},
  editor    = {Allan, Keith},
  isbn      = {978-0080959689},
  pages     = {912 -- 917},
  year      = {2015},
  subject      = {Verb},
  language  = {en}
}