Soriano, M. A. J., & Castro, P. P. M. Assessment of the engineering aspects of the Ifugao Rice Terraces. Philippine Engineering Journal.
Citazione stile Chigago Style (17a edizione)Soriano, Mark A. Jr, e Peter Paul M. Castro. "Assessment of the Engineering Aspects of the Ifugao Rice Terraces." Philippine Engineering Journal .
Citatione MLA (9a ed.)Soriano, Mark A. Jr, e Peter Paul M. Castro. "Assessment of the Engineering Aspects of the Ifugao Rice Terraces." Philippine Engineering Journal, .
Attenzione: Queste citazioni potrebbero non essere precise al 100%.