Cita APA (7th ed.)

Viray, F. L., & Del Mundo, R. D. (1989). Impact of power interruptions on national economy. Philippine Engineering Journal.

Cita Chicago (17th ed.)

Viray, Francisco L., i Rowaldo D. Del Mundo. "Impact of Power Interruptions on National Economy." Philippine Engineering Journal 1989.

Cita MLA (9th ed.)

Viray, Francisco L., i Rowaldo D. Del Mundo. "Impact of Power Interruptions on National Economy." Philippine Engineering Journal, 1989.