Não informado. (1931). Investigational report. U.S. Department of Commerce, Bureau of Fisheries.
Citação do estilo Chicago (17ª ed.)Não informado. Investigational Report. Washington: U.S. Department of Commerce, Bureau of Fisheries, 1931.
Citação MLA (8ª ed.)Não informado. Investigational Report. U.S. Department of Commerce, Bureau of Fisheries, 1931.
警告:这些引文格式不一定是100%准确.