APA

PPL Conference Publication nr 14, . (1977). Electric vehicle development. International conference, London 31 May - 1 June 1977. London: PPL Conference Publication nr 14.

Chicago

PPL Conference Publication nr 14, . 1977. Electric vehicle development. International conference, London 31 May - 1 June 1977. London: PPL Conference Publication nr 14.

Harvard

PPL Conference Publication nr 14, . (1977). Electric vehicle development. International conference, London 31 May - 1 June 1977. London: PPL Conference Publication nr 14.

MLA

PPL Conference Publication nr 14, . Electric vehicle development. International conference, London 31 May - 1 June 1977. London: PPL Conference Publication nr 14. 1977.