American Psychological Association
Elkind, David, & Flavell, John H ( 1969 ). Studies in Cognitive Development ( 00 ed. ). Oxford University Press.
Modern Language Association
Elkind, David and Flavell, John H. Studies in Cognitive Development . Oxford University Press. 1969
Chicago Citation
Elkind, David and Flavell, John H. Studies in Cognitive Development . 00 .Oxford
: Oxford University Press, 1969.
American Medical Association
Elkind, David and Flavell, John H. Studies in Cognitive Development . Oxford University Press; 1969.
