Herrero Ruiz de Loizaga FJ. Historical approach to the use of the indicative, infinitive and subjunctive in indirect questions with «saber» in Spain and America. RFULL [Internet]. 2026 June 17 [cited 2026 Nov. 13];(52):33-70. Available from: https://www.ull.es/revistas/index.php/filologia/article/view/7656