Gaya APA
Oldfield, R.. (1974).
Elasticities of demand for travel .
:
TRRL.
Gaya Chicago
Oldfield, R..
Elasticities of demand for travel.
:
TRRL,
1974.
Text.
Gaya MLA
Oldfield, R..
Elasticities of demand for travel.
:
TRRL,
1974.
Text.
Gaya Turabian
Oldfield, R..
Elasticities of demand for travel.
:
TRRL,
1974.
Print.