Gaya APA

Sellin, D, F., Birch, J, W. (1981). Psychoeducational Development of Gifted and Talented Learners (Ed. 1). Maryland: An Aspen Publication.

Gaya MLA

Sellin, Donald, F.., Birch, Jack, W.. "Psychoeducational Development of Gifted and Talented Learners". Ed. 1 Maryland: An Aspen Publication, 1981. Text.