Corey, M. S. C. a. G. Becoming a helper. Brooks/Cole.
Chicagoスタイル(17版)引用形式Corey, Marianne Schneider Corey and Gerald. Becoming a Helper. Brooks/Cole.
MLA(8版)引用形式Corey, Marianne Schneider Corey and Gerald. Becoming a Helper. Brooks/Cole.
警告: この引用は必ずしも正確ではありません.