Παραπομπή σε μορφή APA (7η εκδ.)

Umali, B., & Aguilar, J. (1999). Workbook sa pagbubuo ng resource management plan. Tambuyog Development Center.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Umali, Bas, και Jet Aguilar. Workbook Sa Pagbubuo Ng Resource Management Plan. Quezon City: Tambuyog Development Center, 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

Umali, Bas, και Jet Aguilar. Workbook Sa Pagbubuo Ng Resource Management Plan. Tambuyog Development Center, 1999.