Παραπομπή σε μορφή APA (7η εκδ.)

Hanley, N. (1991). Farming and the countryside: An economic analysis of external costs and benefits. C·A·B International.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hanley, Nick. Farming and the Countryside: An Economic Analysis of External Costs and Benefits. Wallingford, Oxon, UK: C·A·B International, 1991.

Παραπομπή σε μορφή MLA (8th εκδ.)

Hanley, Nick. Farming and the Countryside: An Economic Analysis of External Costs and Benefits. C·A·B International, 1991.