- 
              
            601
- 
              
            602
- 
              
            603
- 
              
            604A time to speak a psycholinguistic inquiry into the critical period for human speechĐược phát hành 1988Sách
- 
              
            605
- 
              
            606
- 
              
            607Classroom second language development a study of classroom interaction and language acquisitionĐược phát hành 1988Sách
- 
              
            608
- 
              
            609
- 
              
            610


