Não informado. (1962). South African Forestry Journal. South African Forestry Association.
Chicago-referens (17:e uppl.)Não informado. South African Forestry Journal. Pretoria, Africa do Sul: South African Forestry Association, 1962.
MLA-referens (8:e uppl.)Não informado. South African Forestry Journal. South African Forestry Association, 1962.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.