Gaya APA
Caterpillar D397 Engine. (1974).
USA:
Shirley Ward.
Gaya Chicago
Caterpillar D397 Engine.
.
USA:
Shirley Ward,
1974.
Text.
Gaya MLA
Caterpillar D397 Engine.
.
USA:
Shirley Ward,
1974.
Text.
Gaya Turabian
Caterpillar D397 Engine.
USA:
Shirley Ward,
1974.
Print.