APA

State University. Extension Service, O., State University. Cooperative Extension, W., of Idaho. Cooperative Extension Service, U., States. Dept. of Agriculture, U., Northwest Cooperative Extension, P., Mansour, N., Baggett, J., & Jarmin, M. (1985). Turnip & rutabaga seed production in the Pacific Northwest. : [Corvallis, Or.?] : Oregon State University Extension Service, Washington State University Cooperative Extension, University of Idaho Cooperative Extension Service and U.S. Dept. of Agriculture.