Adelhelm, R., & Steck, K. (1974). Agricultural mechanisation costs and profitability. [y.y: n.pub].
Chicago Style CitationAdelhelm, R., and K. Steck. Agricultural Mechanisation Costs and Profitability. [y.y: n.pub], 1974.
MLA CitationAdelhelm, R., and K. Steck. Agricultural Mechanisation Costs and Profitability. [y.y: n.pub], 1974.
Warning: These citations may not always be 100% accurate.