| title | ISBN-13 | year of publication | |
|---|---|---|---|
| Medieval Galician-Port Poetry | 978-0-8240-7109-7 | 1992 | |
| Old French and Comparative Gallo-Romance Syntax | 978-3-484-52232-9 | 1990 | |
| Provencal Philology and the Poetry of Guillaume of Poitiers | 978-87-7492-377-0 | 1983 | |
| The Earliest Portuguese Lyrics | 978-87-7492-225-4 | 1978 | |
| The Old Provencal Noun and Adjective Declension | 978-87-7492-193-6 | 1976 | |
| The syntax of medieval Occitan | 978-3-11-198480-3 | 2015 | |
| The syntax of medieval Occitan | 978-3-484-52208-4 | 1986 | |
| Tuscan Poetry of the Duecento: An Anthology | 978-0-8153-1625-1 | 1994 |
F. J. · Fard Johnson · Ford Johnson · Fred Johnsen · Fred Johnson · Freddie Johansson · Frede P. Jensen · Frida Jungham · frode-jensen
De Gruyter · Garland Publishing · Routledge · Univ Pr of Southern Denmark