National physics congress University of the Philippines, Baguio City, Samahang Pisika ng Pilipinas, & Danilo M. Yanga. (1988). Progress of the theoretic0al and experimental physics (1987): Proceedings of the sixth national physics congress held at University Philippines Baguio, 22-24 May 1987. Samahang Pisika ng Pilipinas.
Lua i Stíl Chicago (17ú heag.)National physics congress University of the Philippines, Baguio City, Samahang Pisika ng Pilipinas, agus Danilo M. Yanga. Progress of the Theoretic0al and Experimental Physics (1987): Proceedings of the Sixth National Physics Congress Held at University Philippines Baguio, 22-24 May 1987. Quezon City: Samahang Pisika ng Pilipinas, 1988.
Lua MLA (9ú heag.)National physics congress University of the Philippines, Baguio City, et al. Progress of the Theoretic0al and Experimental Physics (1987): Proceedings of the Sixth National Physics Congress Held at University Philippines Baguio, 22-24 May 1987. Samahang Pisika ng Pilipinas, 1988.