APA (7th ed.) Citation

Tolkien, J. R. R., & Sisam, K. (1922). A middle English vocabulary: Designed for use with Sisam's Fourteenth century verse & prose. The Clarendon Press.

Chicago Style (17th ed.) Citation

Tolkien, J. R. R., and Kenneth Sisam. A Middle English Vocabulary: Designed for Use with Sisam's Fourteenth Century Verse & Prose. Oxford: The Clarendon Press, 1922.

MLA (8th ed.) Citation

Tolkien, J. R. R., and Kenneth Sisam. A Middle English Vocabulary: Designed for Use with Sisam's Fourteenth Century Verse & Prose. The Clarendon Press, 1922.