Herbold, R. J. (2011). What's holding you back?: Ten bold steps that define gutsy leaders. Jossey-Bass.
Cita Chicago Style (17a ed.)Herbold, Robert J. What's Holding You Back?: Ten Bold Steps That Define Gutsy Leaders. San Francisco: Jossey-Bass, 2011.
Cita MLA (9a ed.)Herbold, Robert J. What's Holding You Back?: Ten Bold Steps That Define Gutsy Leaders. Jossey-Bass, 2011.
Precaución: Estas citas no son 100% exactas.