by Doolittle, John H.
Published in Teaching of psychology (01.02.1995)

by Tilley, M W, Doolittle, J H, Mason, D J
Published in Psychological reports (01.10.1966)

by Herring, F H, Mason, D J, Doolittle, J H, Starrett, D E
Published in Psychological reports (01.12.1966)