Title: Avancemos!: Cuaderno: Practica por niveles (Student Workbook) with Review Bookmarks Level 1, Author: Houghton Mifflin Harcourt
Title: Avancemos!: Cuaderno: Practica por niveles (Student Workbook) with Review Bookmarks Level 2, Author: Houghton Mifflin Harcourt
Title: Pronunciacion de la lengua Espanola para anglohablantes: Spanish Phonetics, Author: Richard E. Morris