Cita APA

Sommerfelt, A. 1., & Marm, I. (1978). Norwegian: A book of self-instruction in the Norwegian riksmal : [a practical course for beginners and students] (1st., 9th imp.). London [etc.]: Hodder and Stoughton.

Citación estilo Chicago

Sommerfelt, Alf 1892-1965, and Ingvald Marm. Norwegian: A Book of Self-instruction in the Norwegian Riksmal : [a Practical Course for Beginners and Students]. 1st., 9th imp. London [etc.]: Hodder and Stoughton, 1978.

Cita MLA

Sommerfelt, Alf 1892-1965, and Ingvald Marm. Norwegian: A Book of Self-instruction in the Norwegian Riksmal : [a Practical Course for Beginners and Students]. 1st., 9th imp. London [etc.]: Hodder and Stoughton, 1978.