Gaya APA

Engineers, A, S, O, A. (1977). Proceedings of the national symposium on soil erosion and sedimentation by water . Mississipi: American Society of Agricultural Engineers.

Gaya MLA

Engineers, American, Society, Of, Agriculture. "Proceedings of the national symposium on soil erosion and sedimentation by water". Mississipi: American Society of Agricultural Engineers, 1977. Text.