Ripley, H. (1983). Police Forces of Great Britan and Ireland: Their amalgamations and their buttons / by Howard Ripley. Hazel.
Citazione stile Chigago Style (17a edizione)Ripley, Howard. Police Forces of Great Britan and Ireland: Their Amalgamations and Their Buttons / by Howard Ripley. Oxfordshire: Hazel, 1983.
Citatione MLA (8a ed.)Ripley, Howard. Police Forces of Great Britan and Ireland: Their Amalgamations and Their Buttons / by Howard Ripley. Hazel, 1983.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.