Não informado. (2007). Annual report of the Director of the Board of Trustees. Field Museum of Natural History.
Style de citation Chicago (17e éd.)Não informado. Annual Report of the Director of the Board of Trustees. Chicago, Ill: Field Museum of Natural History, 2007.
Style de citation MLA (8e éd.)Não informado. Annual Report of the Director of the Board of Trustees. Field Museum of Natural History, 2007.
Attention : ces citations peuvent ne pas être correctes à 100%.