APA (7th ed.) Citation

Fell, J. R. (1918). A Tonga grammar. Society for Promoting Christian Knowledge.

Chicago Style (17th ed.) Citation

Fell, J. R. A Tonga Grammar. London: Society for Promoting Christian Knowledge, 1918.

MLA (8th ed.) Citation

Fell, J. R. A Tonga Grammar. Society for Promoting Christian Knowledge, 1918.