Gifford, J. (2013). 100 great business leaders. Marshall Cavendish.
Cita Chicago Style (17a ed.)Gifford, Jonathan. 100 Great Business Leaders. Singapore: Marshall Cavendish, 2013.
Cita MLA (8a ed.)Gifford, Jonathan. 100 Great Business Leaders. Marshall Cavendish, 2013.
Precaución: Estas citas no son 100% exactas.