Aikhenvald Alexandra Y. (2004). Evidentiality. Oxford: Oxford University Press. Aikhenvald Alexandra Y. (2014). The grammar of knowledge: a cross-linguistic view of evidentials and the expression of information source. In The Grammar of Knowledge: A Cross-Linguistic Typology. Alexandra Y. Aikhenvald , R. M. W. Dixon (eds.), 1–51. Oxford: Oxford University Press. Alcázar Asier (2010). Information source in Spanish and Basque: a parallel corpus study. In Linguistic Realization of Evidentiality in European languages. Gabriele Diewald, Elena Smirnova (eds.), 131–156. Berlin, New York: De GruyterMouton. Faller, Martina (2012). Evidential scalar implicatures. Linguistics and Philosophy 35, 285–312. Gazdar Gerald (1979). Pragmatics: Implicature, Presupposition and Logical Form. London: Academic Press. Grochowski Maciej, Kisiel Anna, Żabowska Magdalena (2014). Słownik gniazdowy partykuł polskich. Kraków: Polska Akademia Umiejętności. Horn Laurence R. (2004). Implicature. In The Handbook of Pragmatics. Laurence R. Horn, Gregory Ward (eds.), 3-28. Malden, MA.: Blackwell. Huang Yan (2007). Pragmatics. Oxford : Oxford University Press. Korta Kepa, Zubeldia Larraitz (2014). The contribution of evidentials to utterance content: Evidence from the Basque reportative particle omen. Language 90(2), 389–423. Levinson Stephen C. (2000). Presumptive Meanings. The Theory of Generalized Conversational Implicature. Cambridge, MA.: MIT Press. Levinson Stephen C. (2007). Pragmatics. Cambridge etc.: Cambridge U.P. Plungjan Vladimir A. (2008). O pokazateljax čužoj reči i nedostovernosti v russkom jazyke: mol, jakoby i drugie. In Lexikalische Evidenzialitäts-Marker in slavischen Sprachen (= Wiener Slawistischer Almanach, Sonderband 72). Björn Wiemer, Vladimir A. Plungjan (eds.), 285–311. München, Wien: Sagner. Rakhilina Ekaterina V. (1996). Jakoby comme procédé de médiatisation en russe. In L’énonciation médiatisée. Zlatka Guentchéva (ed.), 299–304. Paris: Peeters. Ramat Paolo, Ricca Davide (1998). Sentence adverbs in the languages of Europe. In Adverbial Constructions in the Languages of Europe. Johan van der Auwera, Dónall P.Ó. Baoill (eds.), 187-275. Berlin: Mouton de Gruyter. Wiemer Björn (2006). Particles, parentheticals, conjunctions and prepositions as evidentiality markers in contemporary Polish (A first exploratory study). Studies in Polish Linguistics 3, 5–67. Wiemer Björn, Kampf Veronika (2012). On conditions instantiating tip effects of epistemic and evidential meanings in Bulgarian. Slověne 2, 5–38. [Reprinted in: Belgian Journal of Linguistics 29 (2015), 161–192.] Wiemer Björn, Socka Anna (2017). How much does pragmatics help to contrast the meaning of hearsay adverbs? (Part 1). Studies in Polish Linguistics 12(1), 27–56.