Philippines . National Computer Center. (1975). EDP survey '75. NCC.
Lua i Stíl Chicago (17ú heag.)Philippines . National Computer Center. EDP Survey '75. [Quezon City: NCC, 1975.
Lua MLA (9ú heag.)Philippines . National Computer Center. EDP Survey '75. NCC, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.