Sizes of Dragons : r/HouseOfTheDragon

The Rise of the Dragon: An Illustrated History of the Targaryen Dynasty, Volume One (The Targaryen Dynasty: The House of the Dragon) eBook : Martin, George R. R., García, Elio M.

All of the Dragons in 'House of the Dragon' and Who They Belong to

House of the Dragon Size Comparison of All Dragons

All 17 Dragons of HOTD ranked by size : r/HouseOfTheDragon

Syrax size comparison with Balerion, Vhagar, Vermithor, Caraxes and Meleys : r/HouseOfTheDragon

House of the Dragon' Characters Explained and Family Tree

HOTD's official dragon size, also Sunfyre, Vermithor and Seasmoke official arts : r/HouseOfTheDragon

Dragon sizes for the upcoming season. With metric i suppose Vhagar - 120; Vermithor, Silverwing - 80; Caraxes - 65; Meleys, Sheepstealer - 50; Syrax, Seasmoke, Dreamfyre - 35; Sunfyre - 28; Vermax, Tessarion, Moondancer - 15-20 : r/HouseOfTheDragon

Balerion, the dragon of Aegon the Conqueror, the greatest of all the dragons of the Targaryen house. His teeth were the size of swords, his fire was as black as his scales

Regarding the size of the dragons : r/HouseOfTheDragon