Rowland, V., & Birkett, K. (1992). Personal effectiveness for teachers. Simon and Schuster.
Cita Chicago Style (17a ed.)Rowland, Val, y Ken Birkett. Personal Effectiveness for Teachers. Hertfordshire: Simon and Schuster, 1992.
Cita MLA (9a ed.)Rowland, Val, y Ken Birkett. Personal Effectiveness for Teachers. Simon and Schuster, 1992.
Precaución: Estas citas no son 100% exactas.