Gutiérrez Font, R. (1993). Phonological defossilization in adult Spanish speakers learning english as a foreing language. Escuela de Lenguas Modernas, Universidad de Costa Rica.
Cita Chicago (17th ed.)Gutiérrez Font, Roxana. Phonological Defossilization in Adult Spanish Speakers Learning English as a Foreing Language. San José, Costa Rica: Escuela de Lenguas Modernas, Universidad de Costa Rica, 1993.
Cita MLA (9th ed.)Gutiérrez Font, Roxana. Phonological Defossilization in Adult Spanish Speakers Learning English as a Foreing Language. Escuela de Lenguas Modernas, Universidad de Costa Rica, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.