Dyfyniad APA

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.

Dyfyniad Arddull Chicago

Orr, Alastair, A. S. M. Nazrul Islam, and Gunnar Barnes. The Treadle Pump: Manual of Irrigation for Small Farmers in Bangladesh. Dhaka, Bangladesh: Rangpur Dinajpur Rural Service, 1991.

Dyfyniad MLA

Orr, Alastair, et al. The Treadle Pump: Manual of Irrigation for Small Farmers in Bangladesh. Rangpur Dinajpur Rural Service, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.