APA

Redmill F., Redmill F. J., Valdar A. R. & Institution of Electrical Engineers. (1990). SPC digital telephone exchanges. London, U.K: Peter Peregrinus on behalf of the Institution of Electrical Engineers.

Chicago

Redmill Felix, Redmill Felix J, Valdar A R and Institution of Electrical Engineers. 1990. SPC digital telephone exchanges. London, U.K: Peter Peregrinus on behalf of the Institution of Electrical Engineers.

Harvard

Redmill F., Redmill F. J., Valdar A. R. and Institution of Electrical Engineers. (1990). SPC digital telephone exchanges. London, U.K: Peter Peregrinus on behalf of the Institution of Electrical Engineers.

MLA

Redmill Felix, Redmill Felix J, Valdar A R and Institution of Electrical Engineers. SPC digital telephone exchanges. London, U.K: Peter Peregrinus on behalf of the Institution of Electrical Engineers. 1990.