Clarkson, P. (1999). Gestalt counselling in action (2nd ed.). Sage.
Chicagoスタイル(17版)引用形式Clarkson, Petruska. Gestalt Counselling in Action. 2nd ed. London: Sage, 1999.
MLA(9版)引用形式Clarkson, Petruska. Gestalt Counselling in Action. 2nd ed. Sage, 1999.
警告: この引用は必ずしも正確ではありません.