Παραπομπή σε μορφή APA (7η εκδ.)

Philippines. Department of Tourism. Region II. (2006). Cagayan Valley Region2006 tourism situationer. Department of Tourism. Regional Office.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Philippines. Department of Tourism. Region II. Cagayan Valley Region2006 Tourism Situationer. Tuguegarao, Cagayan: Department of Tourism. Regional Office, 2006.

Παραπομπή σε μορφή MLA (9th εκδ.)

Philippines. Department of Tourism. Region II. Cagayan Valley Region2006 Tourism Situationer. Department of Tourism. Regional Office, 2006.