Cita APA (7a ed.)

Ryvarden, L. (1976). The Polyporaceae of North Europe. Fungiflora.

Cita Chicago Style (17a ed.)

Ryvarden, Leif. The Polyporaceae of North Europe. Oslo: Fungiflora, 1976.

Cita MLA (9a ed.)

Ryvarden, Leif. The Polyporaceae of North Europe. Fungiflora, 1976.