APA (7th ed.) Citation

Tolkien, J. R. R., & Tolkien, B. (1995). Letters from Father Christmas. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Tolkien, J. R. R., and Baillie Tolkien. Letters from Father Christmas. Boston: Houghton Mifflin, 1995.

MLA (9th ed.) Citation

Tolkien, J. R. R., and Baillie Tolkien. Letters from Father Christmas. Houghton Mifflin, 1995.

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