Wheeler, D. K. (1934). The value of the prevention of error as a teaching device: Being the report of an investigation carried out for the Australian Council for Educational Research. Melbourne University Press in association with Oxford University Press.

Wheeler, D. K. The Value of the Prevention of Error as a Teaching Device: Being the Report of an Investigation Carried Out for the Australian Council for Educational Research. Melbourne: Melbourne University Press in association with Oxford University Press, 1934.

Wheeler, D. K. The Value of the Prevention of Error as a Teaching Device: Being the Report of an Investigation Carried Out for the Australian Council for Educational Research. Melbourne University Press in association with Oxford University Press, 1934.