Ortega. The Usage-based Study of Language Learning and Multilingualism. Georgetown University Press.
Citazione stile Chigago Style (17a edizione)Ortega. The Usage-based Study of Language Learning and Multilingualism. Georgetown University Press.
Citatione MLA (8a ed.)Ortega. The Usage-based Study of Language Learning and Multilingualism. Georgetown University Press.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.