Gaya APA
Silitonga, P.H.. (1977).
Speedway cost/benefit study .
:
TRRL.
Gaya Chicago
Silitonga, P.H..
Speedway cost/benefit study.
:
TRRL,
1977.
Text.
Gaya MLA
Silitonga, P.H..
Speedway cost/benefit study.
:
TRRL,
1977.
Text.
Gaya Turabian
Silitonga, P.H..
Speedway cost/benefit study.
:
TRRL,
1977.
Print.