National Research Council of the Philippines. Documentation Division & Anniversary and Scientific Congress (44th : 1977 : Manila). (1977). Proceedings of the 44th Anniversary and Scientific Congress, Philippine International Convention Center, Roxas Blvd., Manila, 8-9 December 1977. National Research Council of the Philippines.
Chicago-viite (17. p.)National Research Council of the Philippines. Documentation Division ja Anniversary and Scientific Congress (44th : 1977 : Manila). Proceedings of the 44th Anniversary and Scientific Congress, Philippine International Convention Center, Roxas Blvd., Manila, 8-9 December 1977. Bicutan, Tagig, Metro Manila: National Research Council of the Philippines, 1977.
MLA-viite (9. p.)National Research Council of the Philippines. Documentation Division ja Anniversary and Scientific Congress (44th : 1977 : Manila). Proceedings of the 44th Anniversary and Scientific Congress, Philippine International Convention Center, Roxas Blvd., Manila, 8-9 December 1977. National Research Council of the Philippines, 1977.