Viray, F. L., & Del Mundo, R. D. (1989). Impact of power interruptions on national economy. Philippine Engineering Journal.
Chicago Style (17. basım) AtıfViray, Francisco L., ve Rowaldo D. Del Mundo. "Impact of Power Interruptions on National Economy." Philippine Engineering Journal 1989.
MLA (9th ed.) AtıfViray, Francisco L., ve Rowaldo D. Del Mundo. "Impact of Power Interruptions on National Economy." Philippine Engineering Journal, 1989.
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