Citace podle APA (7th ed.)
Gambrill, E. D., & Gibbs, L. E. (2009). Critical thinking for helping professionals: A skills-based workbook (3rd. ed.). Oxford University.
Citace podle Chicago (17th ed.)
Gambrill, Eileen D., a Leonard E. Gibbs. Critical Thinking for Helping Professionals: A Skills-based Workbook. 3rd. ed. Oxford, [England] ; New York: Oxford University, 2009.
Citace podle MLA (9th ed.)
Gambrill, Eileen D., a Leonard E. Gibbs. Critical Thinking for Helping Professionals: A Skills-based Workbook. 3rd. ed. Oxford University, 2009.
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