APA (7th ed.) Citation

Sibley, B., & Howe, J. (2003). The maps of Tolkien's Middle-Earth. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Sibley, Brian, and John Howe. The Maps of Tolkien's Middle-Earth. Boston: Houghton Mifflin, 2003.

MLA (9th ed.) Citation

Sibley, Brian, and John Howe. The Maps of Tolkien's Middle-Earth. Houghton Mifflin, 2003.