APA (7th ed.) Citation

Manco, J., Greenhalf, D., & Girouard, M. (1990). Lulworth Castle in the seventeenth century.

Chicago Style (17th ed.) Citation

Manco, Jean, David Greenhalf, and Mark Girouard. Lulworth Castle in the Seventeenth Century. 1990.

MLA (9th ed.) Citation

Manco, Jean, et al. Lulworth Castle in the Seventeenth Century. 1990.