Não informado. (2001). Annual report of the Bureau of Science, Philippine Islands. Bureau of Science.
Lua i Stíl Chicago (17ú heag.)Não informado. Annual Report of the Bureau of Science, Philippine Islands. Manila: Bureau of Science, 2001.
Lua MLA (8ú heag.)Não informado. Annual Report of the Bureau of Science, Philippine Islands. Bureau of Science, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.