Thorne, B. (2003). Carl Rogers. London : SAGE Pub.
Cita Chicago (17th ed.)Thorne, Brian. Carl Rogers. London : SAGE Pub, 2003.
Cita MLA (9th ed.)Thorne, Brian. Carl Rogers. London : SAGE Pub, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.