1. Andersen, Arlow W. ‘Knut Hamsun's America’. Norwegian-American Studies 23 (1967):175-203.
2. Andersen, Per Thomas. Norsk litteraturhistorie. Oslo: Universitetsforlaget, 2001.
3. Arestad, Sverre. ‘Hamsun and America’. Norwegian-American Studies 24 (1970):148-192.
4. Arestad, Sverre. ‘Sigbjørn Obstfelder and America’. Norwegian-American Studies 29 (1983):253-293.
5. Astrup Larsen, Hanna. Knut Hamsun. New York: Alfred A. Knopf, 1922.