The effects of positive reinforcement, punishment, and positive reinforcement-punishment on the acquisition of a motor skill / by William Richey Vaughn
Microform. Eugene, Microform Publications, College of Health, Physical Education and Recreation, Univ. of Oregon, 1977. 2 microfiches : negative ; 11 x 15 cm. (Microform publications / College of Health, Physical Education and Recreation, Univ. of Oregon).