Unknown. (2023). The centenary of the forest administration (1847 to 1962): Souvenir. Forest Research Institute.
Chicago-referens (17:e uppl.)Unknown. The Centenary of the Forest Administration (1847 to 1962): Souvenir. Forest Research Institute, 2023.
MLA-referens (9:e uppl.)Unknown. The Centenary of the Forest Administration (1847 to 1962): Souvenir. Forest Research Institute, 2023.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.