1.7.2.1. Video: Speech to Print: Language Essentials for Teaching Reading - https://www.youtube.com/watch?v=2BUZv4LtQ9I

1.7.2.2. Video: Foundations of Reading Test Prep: Phonics Instruction - YouTube - https://www.youtube.com/watch?v=pYL5ZRXK5ug

1.7.2.3. Article: English vowel sounds: Pronunciation issues and student and faculty ... - https://www.redalyc.org/journal/447/44763474003/html/

1.7.2.4. Article: Phonological Analysis of English Vowel Pronunciation - KnE Open - https://knepublishing.com/index.php/KnE-Social/article/view/8665/14592