Παραπομπή σε μορφή APA (7η εκδ.)

Borja, R. I. Soil Incompressibility by 'Mixed' and Penalty Methods. Philippine Engineering Journal.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Borja, Ronaldo I. "Soil Incompressibility by 'Mixed' and Penalty Methods." Philippine Engineering Journal .

Παραπομπή σε μορφή MLA (9th εκδ.)

Borja, Ronaldo I. "Soil Incompressibility by 'Mixed' and Penalty Methods." Philippine Engineering Journal, .