Leloup, Marcel
Tractors for logging
Italy: Food and Agriculture, 1956
 Buku Teks
Tractors and their power units
by John B. Liljedahl [and others]
John Wiley & Sons, 1979
 Buku Teks
El-Sayed, Ahmed F.
Aircraft propulsion and gas turbine engines
CRC Pres, 2006
 Buku Teks
Weathers, Tom
Fundamentals of small gas engines / Tom Weathers and Claud Hunter.
Reston Publishing, , 1983
 Buku Teks
Kay, Ronald D.
Farm management
McGraw-Hill, 2012
 Buku Teks