Não informado. (1920). Journal of the Department of Agriculture of the Union of South Africa. Union of South Africa, Department of Agriculture.
Cytowanie według stylu Chicago (wyd. 17)Não informado. Journal of the Department of Agriculture of the Union of South Africa. Pretoria, Africa do Sul: Union of South Africa, Department of Agriculture, 1920.
Cytowanie według stylu MLA (wyd. 8)Não informado. Journal of the Department of Agriculture of the Union of South Africa. Union of South Africa, Department of Agriculture, 1920.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..