Παραπομπή σε μορφή APA (7η εκδ.)

Rubio, G. T. (1973). A bibliography on the Bicol region. National Development Research Center, University of the Philippines.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Rubio, Greton T. A Bibliography on the Bicol Region. [Quezon City: National Development Research Center, University of the Philippines, 1973.

Παραπομπή σε μορφή MLA (9th εκδ.)

Rubio, Greton T. A Bibliography on the Bicol Region. National Development Research Center, University of the Philippines, 1973.