APA (7e ed.) Bronvermelding

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.

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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