Sundel, S. S., & Sundel, M. (1980). Be assertive: A practical guide for human service workers. Sage Publications.
Chicagoスタイル(17版)引用形式Sundel, Sandra Stone, , Martin Sundel. Be Assertive: A Practical Guide for Human Service Workers. Beverly Hills: Sage Publications, 1980.
MLA(8版)引用形式Sundel, Sandra Stone, , Martin Sundel. Be Assertive: A Practical Guide for Human Service Workers. Sage Publications, 1980.
警告: この引用は必ずしも正確ではありません.