Não informado. (2001). Annual report of the Bureau of Science, Philippine Islands. Bureau of Science.
Chicagoスタイル(17版)引用形式Não informado. Annual Report of the Bureau of Science, Philippine Islands. Manila: Bureau of Science, 2001.
MLA(8版)引用形式Não informado. Annual Report of the Bureau of Science, Philippine Islands. Bureau of Science, 2001.
警告: この引用は必ずしも正確ではありません.