Rowell, J. A., & Selge, H. B. (1972). An investigation of the effects of different rates and methods of promotion from infant grades on the subsequent performances of children in South Australian schools. Research & Planning Branch, Education Dept. of South Australia.

Rowell, J. A., and Heather Bernice Selge. An Investigation of the Effects of Different Rates and Methods of Promotion from Infant Grades on the Subsequent Performances of Children in South Australian Schools. Adelaide: Research & Planning Branch, Education Dept. of South Australia, 1972.

Rowell, J. A., and Heather Bernice Selge. An Investigation of the Effects of Different Rates and Methods of Promotion from Infant Grades on the Subsequent Performances of Children in South Australian Schools. Research & Planning Branch, Education Dept. of South Australia, 1972.