MLA

El Dorado in the United States of America: the Discovery of Inexhaustible Gold Mines in California. 1848. https://collections.library.yale.edu/catalog/2012056.

APA, 6th edition

El Dorado in the United States of America: the discovery of inexhaustible gold mines in California. (1848). [Clippings, Illustrations, Maps, Marginalia, Newspapers]. https://collections.library.yale.edu/catalog/2012056.