Gaya APA
Jacobs, G.D.. (1975).
Basic principles of transportation economics .
:
Department of the Environment.
Gaya Chicago
Jacobs, G.D..
Basic principles of transportation economics.
:
Department of the Environment,
1975.
Text.
Gaya MLA
Jacobs, G.D..
Basic principles of transportation economics.
:
Department of the Environment,
1975.
Text.
Gaya Turabian
Jacobs, G.D..
Basic principles of transportation economics.
:
Department of the Environment,
1975.
Print.