HELMSTETTER, E., & DURAND, V. (1992). NONAVERSIVE INTERVENTIONS FOR SEVERE BEHAVIOR PROBLEMS. EN: CRITICAL ISSUES IN THE LIVES OF PEOPLE WITH SEVERE DISABILITIES. PAUL H.BROOKES.
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Tohutoru Kātū Chicago (17th ed.)
HELMSTETTER, E., me V.M DURAND. NONAVERSIVE INTERVENTIONS FOR SEVERE BEHAVIOR PROBLEMS. EN: CRITICAL ISSUES IN THE LIVES OF PEOPLE WITH SEVERE DISABILITIES. BALTIMORE,MA (USA): PAUL H.BROOKES, 1992.
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Tohutoro MLA (9th ed.)
HELMSTETTER, E., me V.M DURAND. NONAVERSIVE INTERVENTIONS FOR SEVERE BEHAVIOR PROBLEMS. EN: CRITICAL ISSUES IN THE LIVES OF PEOPLE WITH SEVERE DISABILITIES. PAUL H.BROOKES, 1992.
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Kua rahua te tārua ki te papatopenga
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