Não informado. (1941). Fishery Bulletin of the Fish and Wildlife Service. U.S. Fish and Wildlife Service.
Citação do estilo Chicago (17ª ed.)Não informado. Fishery Bulletin of the Fish and Wildlife Service. Washington: U.S. Fish and Wildlife Service, 1941.
Citação MLA (8ª ed.)Não informado. Fishery Bulletin of the Fish and Wildlife Service. U.S. Fish and Wildlife Service, 1941.
警告：這些引文格式不一定是100％准確.