Smith, S., & Powers, F. F. (1930). The relative value of vocabulary and sentence practice for language learning. Journal of Social Psychology, 1, 451-461. doi:10.1080/00224545.1930.9714151. [FULLTEXT]
Smith, S., & Powers, F. F. (1930). The relative value of vocabulary and sentence practice for language learning. Journal of Social Psychology, 1, 451-461. doi:10.1080/00224545.1930.9714151. [FULLTEXT]