APA (7e ed.) Bronvermelding

Diaz, V. L. C., Salinas, J. T. I., & Colongon, A. A. J. (1989). Assessment of secondary materials on the provinces of Ifugao, Mountain Province and Nueva Vizcaya, 1978-1989. Cordillera Studies Center, University of the Philippines Baguio.

Chicago (17e ed.) Bronvermelding

Diaz, Victoria Lourdes C., Jorge T. II Salinas, en Arellano A. Jr Colongon. Assessment of Secondary Materials on the Provinces of Ifugao, Mountain Province and Nueva Vizcaya, 1978-1989. Baguio City: Cordillera Studies Center, University of the Philippines Baguio, 1989.

MLA (9e ed.) Bronvermelding

Diaz, Victoria Lourdes C., et al. Assessment of Secondary Materials on the Provinces of Ifugao, Mountain Province and Nueva Vizcaya, 1978-1989. Cordillera Studies Center, University of the Philippines Baguio, 1989.