Não informado. (2001). Annual report of the Bureau of Science, Philippine Islands. Bureau of Science.
Style de citation Chicago (17e éd.)Não informado. Annual Report of the Bureau of Science, Philippine Islands. Manila: Bureau of Science, 2001.
Style de citation MLA (8e éd.)Não informado. Annual Report of the Bureau of Science, Philippine Islands. Bureau of Science, 2001.
Attention : ces citations peuvent ne pas être correctes à 100%.