Haugen, E., & Firchow, E. S. (1972). Studies by Einar Haugen: Presented on the occasion of his 65th birthday, April 19, 1971. Mouton.
Citazione stile Chigago Style (17a edizione)Haugen, Einar, e Evelyn Scherabon Firchow. Studies by Einar Haugen: Presented on the Occasion of His 65th Birthday, April 19, 1971. The Hague: Mouton, 1972.
Citatione MLA (9a ed.)Haugen, Einar, e Evelyn Scherabon Firchow. Studies by Einar Haugen: Presented on the Occasion of His 65th Birthday, April 19, 1971. Mouton, 1972.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.