Não informado. (2001). Annual report of the Bureau of Science, Philippine Islands. Bureau of Science.
Citação do estilo Chicago (17ª ed.)Não informado. Annual Report of the Bureau of Science, Philippine Islands. Manila: Bureau of Science, 2001.
Citação MLA (8ª ed.)Não informado. Annual Report of the Bureau of Science, Philippine Islands. Bureau of Science, 2001.
警告：這些引文格式不一定是100％准確.