Jewell, P. A., & Dimbleby, G. W. (1966). The experimental earthwork on Overton Down, Wiltshire, England: The first four years. [London]: [s.n.].
Παραπομπή Chicago StyleJewell, Peter Arundel, and G. W. Dimbleby. The Experimental Earthwork On Overton Down, Wiltshire, England: The First Four Years. [London]: [s.n.], 1966.
Παραπομπή MLAJewell, Peter Arundel, and G. W. Dimbleby. The Experimental Earthwork On Overton Down, Wiltshire, England: The First Four Years. [London]: [s.n.], 1966.
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