Teach yourself Norwegian,
a book of self-instruction in the Norwegian riksmal,
by I. Marm [and] Alf Sommerfelt
APA Citation
Marm, I., Sommerfelt, A. (1944). Teach yourself Norwegian: a book of self-instruction in the Norwegian riksmal. New York: McKay.
MLA Citation
Marm, Ingvald, and Alf Sommerfelt. Teach Yourself Norwegian: a Book of Self-instruction In the Norwegian Riksmal. New York: McKay, 1944.
Warning: These citations may not always be complete (especially for serials).