APA (7th ed.) Citation

Wardale, E. E. (1967). An Introduction to Middle English (6. impr.). Routledge & Kegan Paul.

Chicago Style (17th ed.) Citation

Wardale, E. E. An Introduction to Middle English. 6. impr. London: Routledge & Kegan Paul, 1967.

MLA (9th ed.) Citation

Wardale, E. E. An Introduction to Middle English. 6. impr. Routledge & Kegan Paul, 1967.