Παραπομπή σε μορφή APA (7η εκδ.)

Spain, R. (2008). The power and performance of roman water-mills: Hydro-mechanical analysis of vertical-wheeled water-mills. John and Erica Hedges Ltd.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Spain, Robert. The Power and Performance of Roman Water-mills: Hydro-mechanical Analysis of Vertical-wheeled Water-mills. Oxford: John and Erica Hedges Ltd, 2008.

Παραπομπή σε μορφή MLA (8th εκδ.)

Spain, Robert. The Power and Performance of Roman Water-mills: Hydro-mechanical Analysis of Vertical-wheeled Water-mills. John and Erica Hedges Ltd, 2008.