APA (7th ed.) Citation

Wilkinson, B. n. 1. (1978). The high Middle Ages in England, 1154-1377. University Press.

Chicago Style (17th ed.) Citation

Wilkinson, B. n. 1898. The High Middle Ages in England, 1154-1377. Cambridge [etc.]: University Press, 1978.

MLA (9th ed.) Citation

Wilkinson, B. n. 1898. The High Middle Ages in England, 1154-1377. University Press, 1978.