Carretero, M., J. I. Marín-Arrese, and J. Lavid-López. “Adverbs As Evidentials: An English-Spanish Contrastive Analysis of Twelve Adverbs in Spoken and Newspaper Discourse”. Kalbotyra, Vol. 70, Dec. 2017, pp. 32-59, doi:10.15388/Klbt.2017.11185.