References
- Ball, S. , and Bogatz, G. , 1970. The first year of Sesame Street: an evaluation . Princeton, N.J.: Educational Testing Service; 1970.
- Bogatz, G. , and Ball, S. , 1971. The second year of Sesame Street: a continuing evaluation . Princeton, N.J.: Educational Testing Service; 1971.
- Congalton, A. A. , 1963. Occupational status in Australia . Sydney: School of Sociology, University of N.S.W.; 1963.
- Dunn, L. M. , 1965. Expanded manual for the Peabody Picture Vocabulary Test . Minneapolis: American Guidance Service; 1965.
- Teasdale, G. R. , 1969. Validity of the PPVT as a test of language ability with lower SES children , Psychological Reports 25 (1969), p. 746.