湯加話(lea faka-tonga)係種南島語系語言,亦係湯加嘅官方語言,有約莫20萬人用。基本語序係VSO。
- C.Maxwell Churchward, Tongan Grammar. 1999. Tonga: Vavaʼu Press ISBN 982-213-007-4 (previously: 1953. London: Oxford University Press ; 1985. Tonga: Vavaʼu Press ISBN 0-908717-05-9)
- C.Maxwell Churchward, Tongan Dictionary: Tongan-English and English-Tongan. 1999. Tonga: Vavaʼu Press (previsouly: 1959. London : Oxford University Press)
- Edgar Tuʻinukuafe, A Simplified Dictionary of Modern Tongan. 1993. Polynesian Press ISBN 0908597096, ISBN 978-0908597093
- Harry Feldman, Some Notes on Tongan Phonology. 1978. Oceanic Linguistics 17. 133–139.
連出去改