| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| English phonetics for Norwegian students | 978-82-00-01451-5 (82-00-01451-7) | 1975 |
| On Stress in Present-day English, Received Pronunciation | 978-82-00-08338-2 (82-00-08338-1) | 1961 |
| Phonetic-phonemic Analysis of the Dialect of Trondheim | 978-82-00-08770-0 (82-00-08770-0) | 1966 |