Fortey, J. (2007). Great scientists. DK Publishing.
Cita Chicago Style (17a ed.)Fortey, Jacqueline. Great Scientists. New York: DK Publishing, 2007.
Cita MLA (8a ed.)Fortey, Jacqueline. Great Scientists. DK Publishing, 2007.
Precaución: Estas citas no son 100% exactas.