Citação norma APA

Emsley, C. (1993). 'Mother, what did policemen do when there weren't any motors?': The law, the police and the regulation of motor traffic in England ; 1900 - 1939. The historical journal.

Citação norma Chicago

Emsley, Clive. "'Mother, What Did Policemen Do When There Weren't Any Motors?': The Law, the Police and the Regulation of Motor Traffic in England ; 1900 - 1939." The Historical Journal 1993.

Citação norma MLA

Emsley, Clive. "'Mother, What Did Policemen Do When There Weren't Any Motors?': The Law, the Police and the Regulation of Motor Traffic in England ; 1900 - 1939." The Historical Journal, 1993.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.