•
Transformasjonell generativ grammatikk (Transformational Generative Grammar, 1969, 1971) •
Foundations of Western Linguistics (1982) • ''From the Land of N'afanua. Samoan Oral Texts in Transcription with Translation, Notes and Vocabulary'' (1987) •
A Handbook of the Tokelau Language (with Ingjerd Hoëm, Consulata Mahina Iosefo, and Arnfinn Muruvik Vonen, 1989) •
Ko te kalama moamoa Tokelau (with Ingjerd Hoëm and Arnfinn Muruvik Vonen, 1989) •
Kupu mai te Tutolu. Tokelau Oral Literature (with Ingjerd Hoëm and Arnfinn Muruvik Vonen, 1992) •
Samoan Reference Grammar (with
Ulrike Mosel, 1992) • (editor)
...and the Word was God. Missionary Linguistics and Missionary Grammar (1996) •
The History of Linguistics in the Nordic Countries (with
Fred Karlsson, Carol Henriksen, and Bengt Sigurd, 2000) == References ==