Paloma Núñez-Pertejo, María José López-Couso, Belén Méndez-Naya and Javier Pérez-Guerra Crossing Linguistic Boundaries Systemic, Synchronic and Diachronic Variation in English - Bloomsbury Bloomsbury Academic 2019 ISBN: 9781350053885 Source: Textbook Subjects--Topical Terms: Linguistics