Gaya APA
Alcock, Ralph. (1986).
Tractor-Implement System .
Westport:
Avi Publishing Co.
Gaya Chicago
Alcock, Ralph.
Tractor-Implement System.
Westport:
Avi Publishing Co,
1986.
Text.
Gaya MLA
Alcock, Ralph.
Tractor-Implement System.
Westport:
Avi Publishing Co,
1986.
Text.
Gaya Turabian
Alcock, Ralph.
Tractor-Implement System.
Westport:
Avi Publishing Co,
1986.
Print.