R. Cogan

发表

R. Cogan, R. Cogan, J. Hopson, 1971, Perceptual and motor skills.

Jane G. Staples, R. Cogan, R. Cogan, 1990, Perceptual and motor skills.

Robert Cogan, R. Cogan, 1984 .

Robert Cogan, R. Cogan, 1976, Notre Dame J. Formal Log..