1. Possible worlds: An introduction to logic and its philosophy;Bradley,1979
2. What is necessarily true in psychology;Smedslund,1984
3. Intelligence, information processing and analogical reasoning: The componential analysis of abilities;Sternberg,1977
4. Beyond IQ. A triarchic theory of intelligence;Sternberg,1985
5. Inside intelligence;Sternberg;American Scientist,1986