Não informado. (1961). Forestry in South Africa. Department of Forestry.
Chicago-Zitierstil (17. Ausg.)Não informado. Forestry in South Africa. Pretoria, Africa do Sul: Department of Forestry, 1961.
MLA-Zitierstil (8. Ausg.)Não informado. Forestry in South Africa. Department of Forestry, 1961.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.