R. L ยท Richard L.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Assessment of Learners With Special Needs | 978-0-205-11733-8 (0-205-11733-3) | 1989 |
| Instructor's Manual for Assessment of learners with special needs | 978-0-205-11734-5 (0-205-11734-1) | 1989 |
| Teaching the Mentally Retarded Student: Curriculum, Methods, and Strategies | 978-0-205-10262-4 (0-205-10262-X) | 1987 |