Richey, C. B. (1961). Agricultural engineers' handbook. McGraw-Hill.
Cita Chicago (17th ed.)Richey, C. B. Agricultural Engineers' Handbook. New York: McGraw-Hill, 1961.
Cita MLA (9th ed.)Richey, C. B. Agricultural Engineers' Handbook. McGraw-Hill, 1961.
Atenció: Aquestes cites poden no estar 100% correctes.