APA (7th ed.) Citation

Geodata Oy. (1999). Helsinki 1:15000 =: Helsingfors 1:15000. Geodata, WS Bookwell Oy).

Chicago Style (17th ed.) Citation

Geodata Oy. Helsinki 1:15000 =: Helsingfors 1:15000. [Helsinki]: Geodata, WS Bookwell Oy), 1999.

MLA (8th ed.) Citation

Geodata Oy. Helsinki 1:15000 =: Helsingfors 1:15000. Geodata, WS Bookwell Oy), 1999.

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