2.5.4.1. Video: How to Pronounce the L Sound in English - YouTube - https://www.youtube.com/watch?v=0z1gT2g3w5s

2.5.4.2. Video: L Sound | Learn English Pronunciation - YouTube - https://www.youtube.com/watch?v=3f4kN4kX4U

2.5.4.3. Article: Minimal Pair /r/ and /l/ | Learn English - https://www.englishclub.com/pronunciation/minimal-pairs-r-l.php

2.5.4.4. Article: English Pronunciation: The L Sound - Hadar Shemesh - https://hadarshemesh.com/magazine/l-sound/