APA (7th ed.) Citation

HALE, J., HIGHFIELD, J., & SMALLEY, B. (1965). Europe in the late middle ages. Faber.

Chicago Style (17th ed.) Citation

HALE, J.R, J.R.L HIGHFIELD, and B. SMALLEY. Europe in the Late Middle Ages. London: Faber, 1965.

MLA (9th ed.) Citation

HALE, J.R, et al. Europe in the Late Middle Ages. Faber, 1965.