APA (7th ed.) Citation

Rosén, R. (1950). Helsingfors stads historia.

Chicago Style (17th ed.) Citation

Rosén, Ragnar. Helsingfors Stads Historia. Helsingfors, 1950.

MLA (9th ed.) Citation

Rosén, Ragnar. Helsingfors Stads Historia. 1950.

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