'TH': Consonant Sound / ð / a...
ð SOUND
"th" [θ] [ð] consonant soun...
English Sounds - The Two TH Consonant...
The difference between /θ/ and /ð/
Introduction to Articulatory Phonetic...
English pronunciation – Comparison - ...
Dental Fricative Sounds (TH sound)
The /ð/ sound (th)