APA (7th ed.) Citation

Sibley, B., Howe, J., & Tolkien, J. R. R. (2024). The maps of Middle-Earth (Omnibus edition.). William Morrow, an imprint of HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Sibley, Brian, John Howe, and J. R. R. Tolkien. The Maps of Middle-Earth. Omnibus edition. New York: William Morrow, an imprint of HarperCollins Publishers, 2024.

MLA (9th ed.) Citation

Sibley, Brian, et al. The Maps of Middle-Earth. Omnibus edition. William Morrow, an imprint of HarperCollins Publishers, 2024.