Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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