Rossow, L. (1990). The principalship: Dimension instructional Leadership. Prentice-Hall.
Dyfyniad Arddull ChicagoRossow, Lawrence. The Principalship: Dimension Instructional Leadership. New Jersey: Prentice-Hall, 1990.
Dyfyniad MLARossow, Lawrence. The Principalship: Dimension Instructional Leadership. Prentice-Hall, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.