APA (7th ed.) Citation

Rio Doval, J. M., & Cros Herrero, J. (1991). Central telefònica digital.

Chicago Style (17th ed.) Citation

Rio Doval, José M., and Jordi Cros Herrero. Central Telefònica Digital. 1991.

MLA (9th ed.) Citation

Rio Doval, José M., and Jordi Cros Herrero. Central Telefònica Digital. 1991.

Warning: These citations may not always be 100% accurate.