Não informado. Transvaal agricultural journal. Union of South Africa, Department of Agriculture.
Chicago-Zitierstil (17. Ausg.)Não informado. Transvaal Agricultural Journal. Pretoria, Africa do Sul: Union of South Africa, Department of Agriculture.
MLA-Zitierstil (8. Ausg.)Não informado. Transvaal Agricultural Journal. Union of South Africa, Department of Agriculture.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.