Não informado. Shellfish situation and outlook. U.S. National Marine Fisheries Service.
Citação do estilo Chicago (17ª ed.)Não informado. Shellfish Situation and Outlook. Washington: U.S. National Marine Fisheries Service.
Citação MLA (8ª ed.)Não informado. Shellfish Situation and Outlook. U.S. National Marine Fisheries Service.
警告：这些引文格式不一定是100％准确.