| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| The Development of Second Language Proficiency | Paperback | 978-0-521-38795-8 (0-521-38795-7) | 2010 | |
| The Development of Second Language Proficiency | Hardcover | 978-0-521-38410-0 (0-521-38410-9) | 1990 | Patrick Allen · Jim Cummins · Merrill Swain |