APA (7th ed.) Citation

Patrick, J., Packham, M., & Bird, S. (1986). The age of invasions: Britain 55 BC - AD 1200 (1. publ., reprinted (revised).). Murray.

Chicago Style (17th ed.) Citation

Patrick, John, Mollie Packham, and Susan Bird. The Age of Invasions: Britain 55 BC - AD 1200. 1. publ., reprinted (revised). London: Murray, 1986.

MLA (9th ed.) Citation

Patrick, John, et al. The Age of Invasions: Britain 55 BC - AD 1200. 1. publ., reprinted (revised). Murray, 1986.