APA način citiranja (7. izdanje)

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

Čikaški stil citiranja (17. izdanje)

Redmill, Felix, i A. R. Valdar. SPC Digital Telephone Exchanges. London, U.K.: Peter Peregrinus on behalf of the Institution of Electrical Engineers, 1990.

MLA način citiranja (8. izdanje)

Redmill, Felix, i A. R. Valdar. SPC Digital Telephone Exchanges. Peter Peregrinus on behalf of the Institution of Electrical Engineers, 1990.