APA (7th ed.) Citation

Ryvarden, L. The polyporaceae of North Europe. Fungiflora.

Chicago Style (17th ed.) Citation

Ryvarden, Leif. The Polyporaceae of North Europe. Oslo: Fungiflora.

MLA (9th ed.) Citation

Ryvarden, Leif. The Polyporaceae of North Europe. Fungiflora.

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