1. The development of infant-mother attachment;Ainsworth,1973
2. Patterns of attachment: A psychological study of the strange situation;Ainsworth,1978
3. Development in the linguistic expression of causal relations;Ammon,1980
4. Cognitive development & early childhood education: Piagetian and neo-Piagetian theories;Ammon,1977
5. Learning to speak with style: A study of the sociolinguistic skills of young children;Anderson,1977