APA (7th ed.) Citation

Matthews, J., Stewart, R. J., & Hook, R. (1987). Warriors of Arthur. Blandford.

Chicago Style (17th ed.) Citation

Matthews, John, R. J. Stewart, and Richard Hook. Warriors of Arthur. London ; New York: Blandford, 1987.

MLA (9th ed.) Citation

Matthews, John, et al. Warriors of Arthur. Blandford, 1987.