Nelson-Jones, R. (1993). Lifeskills helping: Helping others through a systematic people-centered approach. Brooks/Cole.
Chicago-Zitierstil (17. Ausg.)Nelson-Jones, Richard. Lifeskills Helping: Helping Others Through a Systematic People-centered Approach. Pacific Grove, Calif: Brooks/Cole, 1993.
MLA-Zitierstil (9. Ausg.)Nelson-Jones, Richard. Lifeskills Helping: Helping Others Through a Systematic People-centered Approach. Brooks/Cole, 1993.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.