Não informado. (1938). Journal of the South African Forestry Association. South African Forestry Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Journal of the South African Forestry Association. Pretoria, Africa do Sul: South African Forestry Association, 1938.
MLA-Zitierstil (8. Ausg.)Não informado. Journal of the South African Forestry Association. South African Forestry Association, 1938.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.