APA (7th ed.) Citation

Tolkien, J. R. R., & Tolkien, C. (1992). Pictures by J.R.R.Tolkien. HarperCollins.

Chicago Style (17th ed.) Citation

Tolkien, J. R. R., and Christopher Tolkien. Pictures by J.R.R.Tolkien. London: HarperCollins, 1992.

MLA (8th ed.) Citation

Tolkien, J. R. R., and Christopher Tolkien. Pictures by J.R.R.Tolkien. HarperCollins, 1992.

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