Baldrige, L. (1993). Letitia baldrige's new complete guide to executive manners. Maxwell Macmillan Internaional.
Dyfyniad Arddull ChicagoBaldrige, Letitia. Letitia Baldrige's New Complete Guide to Executive Manners. New York: Maxwell Macmillan Internaional, 1993.
Dyfyniad MLABaldrige, Letitia. Letitia Baldrige's New Complete Guide to Executive Manners. Maxwell Macmillan Internaional, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.