APA (7th ed.) Citation

Bergsgård, A., & Helland, A. H. (1962). Verdenshistorie 1815 - 1960 (5. Aufl.). Cappelen.

Chicago Style (17th ed.) Citation

Bergsgård, Arne, and Alv H. Helland. Verdenshistorie 1815 - 1960. 5. Aufl. Oslo: Cappelen, 1962.

MLA (9th ed.) Citation

Bergsgård, Arne, and Alv H. Helland. Verdenshistorie 1815 - 1960. 5. Aufl. Cappelen, 1962.

Warning: These citations may not always be 100% accurate.