APA (7th ed.) Citation

Martinsen, H. R. (1945). Kampen for Danmark. Hasselbalch.

Chicago Style (17th ed.) Citation

Martinsen, Harald R. Kampen for Danmark. [København]: Hasselbalch, 1945.

MLA (8th ed.) Citation

Martinsen, Harald R. Kampen for Danmark. Hasselbalch, 1945.