Johansen, I., & Ryyarden, L. (1977). Wood-inhabiting fungi (Aphyllophorales, Homobasidiomycetes) in two Norwegian forest reserves =: Vedboende sopp (Aphyllophorales, Homobasidiomycetes) i to norske skogreservater. Norsk institutt for skogforskning.
Chicago-viite (17. p.)Johansen, Inger, ja Leif Ryyarden. Wood-inhabiting Fungi (Aphyllophorales, Homobasidiomycetes) in Two Norwegian Forest Reserves =: Vedboende Sopp (Aphyllophorales, Homobasidiomycetes) I to Norske Skogreservater. Ås [Norway]: Norsk institutt for skogforskning, 1977.
MLA-viite (8. p.)Johansen, Inger, ja Leif Ryyarden. Wood-inhabiting Fungi (Aphyllophorales, Homobasidiomycetes) in Two Norwegian Forest Reserves =: Vedboende Sopp (Aphyllophorales, Homobasidiomycetes) I to Norske Skogreservater. Norsk institutt for skogforskning, 1977.