Howes, D., & Osgood, C. E. (1954). On the combination of associative probabilities in linguistic contexts. American Journal of Psychology, 67, 241-258. [FULLTEXT]
A History of Psycholinguistics
Bibliography for Levelt (2013)

Howes, D., & Osgood, C. E. (1954). On the combination of associative probabilities in linguistic contexts. American Journal of Psychology, 67, 241-258. [FULLTEXT]