Krystyna Droździał-Szelest y Mirosław Pawlak (Eds.) Psycholinguistic and Sociolinguistic Perspectives on Second Language Learning and Teaching. Studies in Honor of Waldemar Marton Heidelberg: Springer 2013, 250 páginas ISBN: 978-3-642-23547-4 - Sepúlveda, Ricardo (Lenguas Modernas, 2015)