Παραπομπή σε μορφή APA (7η εκδ.)

Villanueva, M. C. C., & Espina, M. A. A. (1999). Likas Lingap: Landscape development of highways along lahar-devastated areas.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Villanueva, Mary Claire C., και Mary Ann A. Espina. Likas Lingap: Landscape Development of Highways Along Lahar-devastated Areas. 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

Villanueva, Mary Claire C., και Mary Ann A. Espina. Likas Lingap: Landscape Development of Highways Along Lahar-devastated Areas. 1999.