Unknown. (2023). Proceedings of the Forestry Conference held on the 9th and 10th December 1937. Forest Research Institute.
Chicago-referens (17:e uppl.)Unknown. Proceedings of the Forestry Conference Held on the 9th and 10th December 1937. Forest Research Institute, 2023.
MLA-referens (9:e uppl.)Unknown. Proceedings of the Forestry Conference Held on the 9th and 10th December 1937. Forest Research Institute, 2023.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.