APA (7th ed.) Citation

Damm, A., & Just, C. (1949). Look at Norway. N.W. Damm.

Chicago Style (17th ed.) Citation

Damm, Arne, and Carl Just. Look at Norway. Oslo: N.W. Damm, 1949.

MLA (9th ed.) Citation

Damm, Arne, and Carl Just. Look at Norway. N.W. Damm, 1949.