Block, P. (1981). Flawless Consulting (sco 2nd.). Jossey-Bass.
Cita Chicago Style (17a ed.)Block, Peter. Flawless Consulting. sco 2nd. San Franci: Jossey-Bass, 1981.
Cita MLA (9a ed.)Block, Peter. Flawless Consulting. sco 2nd. Jossey-Bass, 1981.
Precaución: Estas citas no son 100% exactas.