This book 'Patient Volition and Action in Occupational Therapy' holds Vona du Toit’s original papers and presentations on the theory of creative ability, as it developed in the 1960s and 1970s; it contains Vona du Toit’s work in progress.
du Toit, V (2015) Patient volition and action in occupational therapy. 5th Edition. The Vona and Marie du Toit Foundation. Pretoria, South Africa.