APA (7th ed.) Citation

O'neill,Richard. (1993). The Middle Ages. Grange Books.

Chicago Style (17th ed.) Citation

O'neill,Richard. The Middle Ages. London: Grange Books, 1993.

MLA (9th ed.) Citation

O'neill,Richard. The Middle Ages. Grange Books, 1993.

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