Cita APA

(2009). English sounds in focus: A pronunciation book for spanish learners of english. San Juan: Universidad Nacional de San Juan.

Citación estilo Chicago

English Sounds in Focus: A Pronunciation Book for Spanish Learners of English. San Juan: Universidad Nacional de San Juan, 2009.

Cita MLA

English Sounds in Focus: A Pronunciation Book for Spanish Learners of English. San Juan: Universidad Nacional de San Juan, 2009.