Cita APA (7a ed.)
Couper, D. (1995). Use of graded contour banks for soil conservation.
Cita Chicago Style (17a ed.)
Couper, D.C. Use of Graded Contour Banks for Soil Conservation. 1995.
Cita MLA (9a ed.)
Couper, D.C. Use of Graded Contour Banks for Soil Conservation. 1995.
Precaución: Estas citas no son 100% exactas.