1. A. I. Alvarez (1979 ) Code switching among bilingual children. Unpublished Ph.D. dissertation, University of Massachusetts.
2. From the editor
3. L. L. Cheng (1986 ) The Acquisition of Mandarin-Chinese: A Longitudinal Study. Third Sino-American Symposium on Speech-Language Pathology and Communicative Disorders. National Taiwan Normal University, Taipei, Taiwan.