Miguel Ángel Quesada Pacheco

Miguel Ángel Quesada Pacheco is a Costa Rican linguist and author, known for his contributions to the understanding of regional dialects and language use in Costa Rica. His work, particularly the 'Nuevo Diccionario de Costarriqueñismos', has been influential in documenting and analyzing the nuances of Costa Rican Spanish, including the use of pronouns such as 'vos', 'tú', and 'usted'.