O'Brien Sánchez, K. A. (2013). Analysis of techniques for the development of english speaking skills in students of preschool level at Justo Abel Castillo Elementary School, La Concepción, Bugaba, Chiriquí, 2013. David, Panamá: UDELAS.
Chicago Style CitationO'Brien Sánchez, Karol Ayleen. Analysis of Techniques for the Development of English Speaking Skills in Students of Preschool Level At Justo Abel Castillo Elementary School, La Concepción, Bugaba, Chiriquí, 2013. David, Panamá: UDELAS, 2013.
MLA CitationO'Brien Sánchez, Karol Ayleen. Analysis of Techniques for the Development of English Speaking Skills in Students of Preschool Level At Justo Abel Castillo Elementary School, La Concepción, Bugaba, Chiriquí, 2013. David, Panamá: UDELAS, 2013.