APA aipamena

COVEY STEPHEN R. (1995). PRINCIPLE CENTRED LEADERSHIP. SIMON & SCHUSTER INC.

Chicago Style aipamena

COVEY STEPHEN R. PRINCIPLE CENTRED LEADERSHIP. LONDON: SIMON & SCHUSTER INC, 1995.

MLA aipamena

COVEY STEPHEN R. PRINCIPLE CENTRED LEADERSHIP. SIMON & SCHUSTER INC, 1995.