Whitney, E. P. (2010). Blueprint for success in business. University Press of America.
Dyfyniad Arddull ChicagoWhitney, E. P. Blueprint for Success in Business. Lanham, MD: University Press of America, 2010.
Dyfyniad MLAWhitney, E. P. Blueprint for Success in Business. University Press of America, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.