Dorothy G. Singer/ Jerome L. Singer
(3)
Dorothy G. Singer (EDT)/ Roberta Michnick Golinkoff (EDT)/ Kathy Hirsh-Pasek (EDT)
(2)
Dorothy G. Singer (EDT)/ Jerome L. Singer (EDT)
(1)
Dorothy G. Singer (EDT)/ Robin Fretwell Wilson (EDT)/ Nancy E. Dowd (EDT)
(1)
Dorothy G. Singer/ Tracey A. Revenson
(1)
Edward Zigler (EDT)/ Dorothy G. Singer (EDT)/ Sandra J. Bishop-Josef (EDT)
(1)
Kathy Hirsh-Pasek/ Roberta Michnick Golinkoff/ Laura E. Berk/ Dorothy G. Singer
(1)