1John M. Novak. Inviting Educational Leadership: Fulfilling Potential and Applying an Ethical Perspective to the Educational Process. London: Person, 2002:22.
8John M. Novak. Inviting Educational Leadership: Fulfilling Potential and Applying an Ethical Perspective to the Educational Process. London: Person, 2002:19.
9John M. Novak. Inviting Educational Leadership: Fulfilling Potential and Applying an Ethical Perspective to the Educational Process. London: Person, 2002:27-30.
10John M. Novak. Inviting Educational Leadership: Fulfilling Potential and Applying an Ethical Perspective to the Educational Protess.London: Person, 2002:175-177.