Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
The book provides a systematic investigation of the dynamic trajectories in the oral language development of English as a Foreign Language (EFL) learners, integrating both inter-individual variation and intra-individual variability. It also identifies unobserved heterogeneity in oral language production.