High Valyrian

High Valyrian: A Comprehensive Guide to the Language of Game of Thrones and House of the Dragon.: Master the Language of the Targaryens from Game of Thrones and House of the Dragon. (English Edition)

Independently published

High Valyrian - English Dictionary | Fantasy Language Learning: Speak like a Dragon Lord from Essos | More than 275 words | Bilingual and Illustrated | For Kids and Adults

Living Language

Living Language Dothraki: Game of Thrones [Lingua Inglese]: A Conversational Language Course Based on the Hit Original HBO Series Game of Thrones

Golden Armada

High Valyrian [Explicit]                        

Columbia

Pray (High Valyrian)                            

Penguin Books

The Art of Language Invention: From Horse-Lords to Dark Elves to Sand Worms, the Words Behind World-Building (English Edition)