APA (7th ed.) Citation

Tolkien, J. R. R. (1994). Father Christmas letters. HarperCollins.

Chicago Style (17th ed.) Citation

Tolkien, J. R. R. Father Christmas Letters. London: HarperCollins, 1994.

MLA (8th ed.) Citation

Tolkien, J. R. R. Father Christmas Letters. HarperCollins, 1994.

Warning: These citations may not always be 100% accurate.