APA (7th ed.) Citation

Leonin, C. C., Medina, M. V. L., Turla, M. C. O., & Manahan, G. V. (1987). PLDT Dansalan: Digital switching system.

Chicago Style (17th ed.) Citation

Leonin, Catalina C., Ma. Victoria L. Medina, Ma. Carmen O. Turla, and Geronimo V. Manahan. PLDT Dansalan: Digital Switching System. 1987.

MLA (9th ed.) Citation

Leonin, Catalina C., et al. PLDT Dansalan: Digital Switching System. 1987.