APA Citation

Perry, H. M. (1939). The relative efficiency of actual and "imaginary" practice in five selected tasks. New York.

Chicago Style Citation

Perry, Horace Mitchell. The Relative Efficiency of Actual and "imaginary" Practice in Five Selected Tasks. New York, 1939.

MLA Citation

Perry, Horace Mitchell. The Relative Efficiency of Actual and "imaginary" Practice in Five Selected Tasks. New York, 1939.

Warning: These citations may not always be 100% accurate.