Soriano, M. A. J., & Castro, P. P. M. Assessment of the engineering aspects of the Ifugao Rice Terraces. Philippine Engineering Journal.
Chicago Style (17. basım) AtıfSoriano, Mark A. Jr, ve Peter Paul M. Castro. "Assessment of the Engineering Aspects of the Ifugao Rice Terraces." Philippine Engineering Journal .
MLA (9th ed.) AtıfSoriano, Mark A. Jr, ve Peter Paul M. Castro. "Assessment of the Engineering Aspects of the Ifugao Rice Terraces." Philippine Engineering Journal, .
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