Doel, M., & Sawdon, C. (1999). The essential groupworker: Teaching and learning creative groupwork. Jessica Kingsley Publishers.
Chicagoスタイル(17版)引用形式Doel, Mark, , Catherine Sawdon. The Essential Groupworker: Teaching and Learning Creative Groupwork. London: Jessica Kingsley Publishers, 1999.
MLA(9版)引用形式Doel, Mark, , Catherine Sawdon. The Essential Groupworker: Teaching and Learning Creative Groupwork. Jessica Kingsley Publishers, 1999.
警告: この引用は必ずしも正確ではありません.