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.
Citazione stile Chigago Style (17a edizione)Diaz, Victoria Lourdes C., Jorge T. II Salinas, e 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.
Citatione MLA (9a ed.)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.