W D Hopkins

发表

D A Washburn, D M Rumbaugh, W K Richardson, 1989, Journal of comparative psychology.

W. Hopkins, R. Morris, W D Hopkins, 1989, Behavioral neuroscience.

David A. Leavens, K. Bard, W. Hopkins, 1996, Journal of comparative psychology.

D A Washburn, D M Rumbaugh, D. Washburn, 1991, Journal of experimental psychology. Animal behavior processes.

David A. Leavens, W. Hopkins, D. Leavens, 1998, Developmental Psychology.