Gaya APA
Transportation geography: coments and readings. (1974).
New York:
McGraw Hill Book Company.
Gaya Chicago
Transportation geography: coments and readings.
text.
New York:
McGraw Hill Book Company,
1974.
Tesis.
Gaya MLA
Transportation geography: coments and readings.
text.
New York:
McGraw Hill Book Company,
1974.
Tesis.
Gaya Turabian
Transportation geography: coments and readings.
New York:
McGraw Hill Book Company,
1974.
Tesis.