Before revision: The history of policing in New Zealand Between 1986 and 1995 Hill authored " a five-volume history of policing in New Zealand, which is regarded as the most comprehensive work in its field."
After revision: The History of Policing in New Zealand Between 1986 and 1995 Hill authored " a five-volume series of books, entitled The History of Policing in New Zealand, and which is " regarded as the most comprehensive work in its field.