Não informado. (2007). Annual report of the Director to the Board of Trustees. Chicago Natural History Museum.
Citação do estilo Chicago (17ª ed.)Não informado. Annual Report of the Director to the Board of Trustees. Chicago, Ill: Chicago Natural History Museum, 2007.
Citação MLA (8ª ed.)Não informado. Annual Report of the Director to the Board of Trustees. Chicago Natural History Museum, 2007.
警告：這些引文格式不一定是100％准確.