Orr, A., Nazrul Islam, A. S. M., & Barnes, G. (1991). The Treadle pump: Manual of irrigation for small farmers in Bangladesh. Rangpur Dinajpur Rural Service.
Παραπομπή σε μορφή Chicago (17η εκδ.)Orr, Alastair, A. S. M. Nazrul Islam, και Gunnar Barnes. The Treadle Pump: Manual of Irrigation for Small Farmers in Bangladesh. Dhaka, Bangladesh: Rangpur Dinajpur Rural Service, 1991.
Παραπομπή σε μορφή MLA (8th εκδ.)Orr, Alastair, et al. The Treadle Pump: Manual of Irrigation for Small Farmers in Bangladesh. Rangpur Dinajpur Rural Service, 1991.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.