APA (7th ed.) Citation

Hall, A. L., & Molengraaff, G. A. F. (1925). The Vredefort mountain land in the southern Transvaal and the northern Orange Free State. Koninklijke Akademie van Wetenschappen.

Chicago Style (17th ed.) Citation

Hall, A. L., and G. A. F. Molengraaff. The Vredefort Mountain Land in the Southern Transvaal and the Northern Orange Free State. Amsterdam: Koninklijke Akademie van Wetenschappen, 1925.

MLA (8th ed.) Citation

Hall, A. L., and G. A. F. Molengraaff. The Vredefort Mountain Land in the Southern Transvaal and the Northern Orange Free State. Koninklijke Akademie van Wetenschappen, 1925.