Dyfyniad APA
ebrary, Inc, & Schuman, S. (2010). The handbook for working with difficult groups: How they are difficult, why they are difficult and what you can do about it. Jossey-Bass.
Dyfyniad Arddull Chicago
ebrary, Inc, and Sandy Schuman. The Handbook for Working with Difficult Groups: How They Are Difficult, Why They Are Difficult and What You Can Do About It. San Francisco: Jossey-Bass, 2010.
Dyfyniad MLA
ebrary, Inc, and Sandy Schuman. The Handbook for Working with Difficult Groups: How They Are Difficult, Why They Are Difficult and What You Can Do About It. Jossey-Bass, 2010.
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