Scott, J. M. (1972). Extel 100: The centenary history of the exchange telegraph company. London: Ernest Benn Limited.
Style de citation ChicagoScott, J. M. Extel 100: The Centenary History of the Exchange Telegraph Company. London: Ernest Benn Limited, 1972.
Style de citation MLAScott, J. M. Extel 100: The Centenary History of the Exchange Telegraph Company. London: Ernest Benn Limited, 1972.
Attention : ces citations peuvent ne pas être correctes à 100%.