APA (7th ed.) Citation
COOK, J., & ET AL. (1990). PRESCHOOL LANGUAGE INTERVENTION, A FOLLOW-UP OF SOME WITHIN-GROUP DIFFERENCES.
Chicago Style (17th ed.) Citation
COOK, J., and ET AL. PRESCHOOL LANGUAGE INTERVENTION, A FOLLOW-UP OF SOME WITHIN-GROUP DIFFERENCES. 1990.
MLA (9th ed.) Citation
COOK, J., and ET AL. PRESCHOOL LANGUAGE INTERVENTION, A FOLLOW-UP OF SOME WITHIN-GROUP DIFFERENCES. 1990.
Warning: These citations may not always be 100% accurate.