New York (State) Civil Service Commission. (1952). Instructor's guide for public employee training courses. s. n.
Dyfyniad Arddull ChicagoNew York (State) Civil Service Commission. Instructor's Guide for Public Employee Training Courses. New York: s. n, 1952.
Dyfyniad MLANew York (State) Civil Service Commission. Instructor's Guide for Public Employee Training Courses. s. n, 1952.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.