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.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিWheeler, 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.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিWheeler, 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.