Acuña Aguilar, E., & Quirós Cordero, J. (2017). Implementation of the multistage frame technique to enhance students’ pronunciation of standard american english vowel sounds in group 10-1A at Canaán High School: A case study.

Acuña Aguilar, Elian, und Johanna Quirós Cordero. Implementation of the Multistage Frame Technique to Enhance Students’ Pronunciation of Standard American English Vowel Sounds in Group 10-1A At Canaán High School: A Case Study. 2017.

Acuña Aguilar, Elian, und Johanna Quirós Cordero. Implementation of the Multistage Frame Technique to Enhance Students’ Pronunciation of Standard American English Vowel Sounds in Group 10-1A At Canaán High School: A Case Study. 2017.