Cita APA

Agassiz, L., & Agassiz, L. (1857). Contributions to the natural history of the United States of America. Boston, Massachusetts: Little, Brown.

Citación estilo Chicago

Agassiz, Louis, y Louis Agassiz. Contributions to the Natural History of the United States of America. Boston, Massachusetts: Little, Brown, 1857.

Cita MLA

Agassiz, Louis, y Louis Agassiz. Contributions to the Natural History of the United States of America. Boston, Massachusetts: Little, Brown, 1857.