APA Style

William., O, D. (2021). Reinsurance and the law of aggregation : event, occurrence, catastrophe, cause . London, UK: Routledge, Taylor & Francis Group.

MLA Style

William., Oliver, Douglas. "Reinsurance and the law of aggregation : event, occurrence, catastrophe, cause". London, UK: Routledge, Taylor & Francis Group, 2021. Text.