Leppan, H. D. (1928). The agricultural development of arid and semi-arid regions: With special reference to South Africa. Central News Agency.
Style de citation Chicago (17e éd.)Leppan, Hubert Dudley. The Agricultural Development of Arid and Semi-arid Regions: With Special Reference to South Africa. [Pretoria?] South Africa: Central News Agency, 1928.
Style de citation MLA (8e éd.)Leppan, Hubert Dudley. The Agricultural Development of Arid and Semi-arid Regions: With Special Reference to South Africa. Central News Agency, 1928.
Attention : ces citations peuvent ne pas être correctes à 100%.